192-583: Tennessee ( / ˌ t ɛ n ɪ ˈ s iː / , locally / ˈ t ɛ n ɪ s i / ), officially the State of Tennessee , is a landlocked state in the Southeastern region of the United States . It borders Kentucky to the north, Virginia to the northeast, North Carolina to the east, Georgia , Alabama , and Mississippi to the south, Arkansas to the southwest, and Missouri to
384-639: A Cherokee town preceding the first European American settlement. Tennessee was initially part of North Carolina, and later the Southwest Territory , before its admission to the Union as the 16th state on June 1, 1796. It earned the nickname "The Volunteer State" due to a strong tradition of military service. A slave state until the American Civil War , Tennessee was politically divided, with most of its western and middle parts supporting
576-479: A patent family covering different use cases of atomic energy, one (case III, in patent FR 971,324 - Perfectionnements aux charges explosives , meaning Improvements in Explosive Charges ) being the first official document explicitly mentioning a nuclear explosion as a purpose, including for war. This patent was applied for on May 4, 1939, but only granted in 1950, being withheld by French authorities in
768-679: A series of sit-ins at segregated lunch counters in Nashville organized by the Nashville Student Movement resulted in the desegregation of facilities in the city. On April 4, 1968, James Earl Ray assassinated civil rights leader Martin Luther King Jr. in Memphis. King had traveled there to support striking African American sanitation workers . The 1962 U.S. Supreme Court case Baker v. Carr arose out of
960-633: A temperate deciduous forest biome commonly known as the Eastern Deciduous Forest. It has eight ecoregions : the Blue Ridge , Ridge and Valley , Central Appalachian, Southwestern Appalachian, Interior Low Plateaus , Southeastern Plains, Mississippi Valley Loess Plains, and Mississippi Alluvial Plain regions. Tennessee is the most biodiverse inland state, the Great Smoky Mountains National Park
1152-557: A "powerful new weapon." Truman was shocked at Stalin's lack of interest. Stalin was nonetheless outraged by the situation , more by the Americans' guarded monopoly of the bomb than the weapon itself. Some historians share the assessment that Truman immediately authorized nuclear weapons as a "negotiating tool" in the early Cold War . In alarm at this monopoly, the Soviets urgently undertook their own atomic program. The Soviet spies in
1344-590: A Cherokee faction loyal to the British led by Dragging Canoe , opposed the settling of the Washington District and Transylvania Colony, and in 1776 attacked Fort Watauga at Sycamore Shoals. The warnings of Dragging Canoe's cousin Nancy Ward spared many settlers' lives from the initial attacks. In 1779, James Robertson and John Donelson led two groups of settlers from the Washington District to
1536-812: A French expedition led by missionary Jacques Marquette and Louis Jolliet explored the Mississippi River and became the first Europeans to map the Mississippi Valley. In 1682, an expedition led by René-Robert Cavelier, Sieur de La Salle constructed Fort Prudhomme on the Chickasaw Bluffs in West Tennessee. By the late 17th century, French traders began to explore the Cumberland River valley, and in 1714, under Charles Charleville's command, established French Lick,
1728-651: A border state that remained with the Union while being contested by the Confederacy and Confederate government of West Virginia . Following the Reconstruction era in the 1870s, many Southeast state legislatures passed Jim Crow laws . The American segregation era spanned from the late 19th century to the mid-1960s. In the mid-to-late 20th century, the Southeast saw many shifting changes take place population wise and economically. The Southeast started to see
1920-604: A challenge to the longstanding rural bias of apportionment of seats in the Tennessee legislature and established the principle of " one man, one vote ". The construction of Interstate 40 through Memphis became a national talking point on the issue of eminent domain and grassroots lobbying when the Tennessee Department of Transportation (TDOT) attempted to construct the highway through the city's Overton Park . A local activist group spent many years contesting
2112-795: A cooler mountain temperate or humid continental climate . The Gulf of Mexico is the dominant factor in Tennessee's climate, with winds from the south responsible for most of the state's annual precipitation. Generally, the state has hot summers and mild to cool winters with generous precipitation throughout the year. The highest average monthly precipitation usually occurs between December and April. The driest months, on average, are August to October. The state receives an average of 50 inches (130 cm) of precipitation annually. Snowfall ranges from 5 inches (13 cm) in West Tennessee to over 80 inches (200 cm) in East Tennessee's highest mountains. Summers are generally hot and humid, with most of
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#17327650330552304-456: A critical mass. The difficulties with implosion centered on the problem of making the chemical explosives deliver a perfectly uniform shock wave upon the plutonium sphere— if it were even slightly asymmetric, the weapon would fizzle. This problem was solved by the use of explosive lenses which would focus the blast waves inside the imploding sphere, akin to the way in which an optical lens focuses light rays. After D-Day , General Groves ordered
2496-468: A discussion at Columbia University . At the first major theoretical conference on the development of an atomic bomb hosted by J. Robert Oppenheimer at the University of California, Berkeley in the summer of 1942, Teller directed the majority of the discussion towards this idea of a "Super" bomb. It was thought at the time that a fission weapon would be quite simple to develop and that perhaps work on
2688-696: A fur trading settlement at the present location of Nashville near the Cumberland River . In 1739, the French constructed Fort Assumption under Jean-Baptiste Le Moyne de Bienville on the Mississippi River at the present location of Memphis, which they used as a base against the Chickasaw during the 1739 Campaign of the Chickasaw Wars . In the 1750s and 1760s, longhunters from Virginia explored much of East and Middle Tennessee. Settlers from
2880-402: A gun-type design, the chain reaction would start in the split second before the critical mass was fully assembled, blowing the weapon apart with a much lower yield than expected, in what is known as a fizzle . As a result, development of Fat Man was given high priority. Chemical explosives were used to implode a sub-critical sphere of plutonium, thus increasing its density and making it into
3072-632: A letter to U.S. President Franklin D. Roosevelt warning him of the threat. Roosevelt responded by setting up the Uranium Committee under Lyman James Briggs but, with little initial funding ($ 6,000), progress was slow. It was not until the U.S. entered the war in December 1941 that Washington decided to commit the necessary resources to a top-secret high priority bomb project. Organized research first began in Britain and Canada as part of
3264-626: A mix of cultural features characteristic of Appalachia , the Upland South , and the Deep South . The Blue Ridge Mountains along the eastern border reach some of the highest elevations in eastern North America, and the Cumberland Plateau contains many scenic valleys and waterfalls . The central part of the state is marked by cavernous bedrock and irregular rolling hills, and level, fertile plains define West Tennessee. The state
3456-662: A more diversified economy. This was aided in part by massive federal investment in the Tennessee Valley Authority (TVA) and the city of Oak Ridge , which was established during World War II to house the Manhattan Project 's uranium enrichment facilities for the construction of the world's first atomic bombs . After the war, the Oak Ridge National Laboratory became a key center of scientific research. The state's economy
3648-521: A neutron. By the start of the war in September 1939, many scientists likely to be persecuted by the Nazis had already escaped. Physicists on both sides were well aware of the possibility of utilizing nuclear fission as a weapon, but no one was quite sure how it could be engineered. In August 1939, concerned that Germany might have its own project to develop fission-based weapons, Albert Einstein signed
3840-499: A nuclear weapon were starved of resources. The Japanese navy lost interest when a committee led by Yoshio Nishina concluded in 1943 that "it would probably be difficult even for the United States to realize the application of atomic power during the war". Historians claim to have found a rough schematic showing a Nazi nuclear bomb. In March 1945, a German scientific team was directed by the physicist Kurt Diebner to develop
4032-437: A number of notable universities, public and private, whose research exert influence globally. Chief among public universities are: There are a number of well-known private institutions, as well. Notable among these are: The region is home to the greatest number of historically black colleges and universities in the nation. The three largest in the region are: There are nine National Football League (NFL) franchises across
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#17327650330554224-509: A population of 35,691 in the first United States census that year, including 3,417 slaves. As support for statehood grew among the settlers, Governor Blount called for elections, which were held in December 1793. The 13-member territorial House of Representatives first convened in Knoxville on February 24, 1794, to select ten members for the legislature's upper house, the council. The full legislature convened on August 25, 1794. In June 1795,
4416-547: A primitive nuclear device in Ohrdruf , Thuringia . Last ditch research was conducted in an experimental nuclear reactor at Haigerloch . On April 12, after Roosevelt's death, Vice President Harry S. Truman assumed the presidency. At the time of the unconditional surrender of Germany on May 8, 1945, the Manhattan Project was still months away from producing a working weapon. Because of the difficulties in making
4608-416: A second referendum on secession by a 69–31% margin, becoming the last state to secede. In response, East Tennessee Unionists organized a convention in Knoxville with the goal of splitting the region to form a new state loyal to the Union. In the fall of 1861, Unionist guerrillas in East Tennessee burned bridges and attacked Confederate sympathizers, leading the Confederacy to invoke martial law in parts of
4800-478: A secret power to destroy a whole block of buildings—nay to concentrate the force of a thousand tons of cordite and blast a township at a stroke?" In January 1933, the Nazis came to power in Germany and suppressed Jewish scientists. Physicist Leo Szilard fled to London where, in 1934, he patented the idea of a nuclear chain reaction via neutrons . The patent also introduced the term critical mass to describe
4992-507: A spur of new economic growth in the 1930s, which stemmed from New Deal policies such as the Tennessee Valley Authority and the Fair Labor Standards Act instituting a minimum wage for the entire nation. World War II further helped growth within the Southeast, as military bases and military production drew workers from farming or low-wage industries into a new economy. With farming mechanization picking up to speed in
5184-539: A team of scientists to follow eastward-moving victorious Allied troops into Europe to assess the status of the German nuclear program (and to prevent the westward-moving Soviets from gaining any materials or scientific manpower). They concluded that, while Germany had a modest nuclear research program headed by Werner Heisenberg , the government had not made a significant investment in the project, and it had been nowhere near success. Similarly, Japan's efforts at developing
5376-529: A testimony does contradict this. On August 6, 1945, a uranium-based weapon, Little Boy, was detonated above the Japanese city of Hiroshima, and three days later, a plutonium-based weapon, Fat Man, was detonated above the Japanese city of Nagasaki. To date, Hiroshima and Nagasaki remain the only two instances of nuclear weapons being used in combat . The atomic raids killed at least one hundred thousand Japanese civilians and military personnel outright, with
5568-415: A working plutonium bomb, it was decided that there should be a test of the weapon. On July 16, 1945, in the desert north of Alamogordo , New Mexico , the first nuclear test took place, code-named " Trinity ", using a device nicknamed " the gadget ." The test, a plutonium implosion-type device, released energy equivalent to 22 kilotons of TNT , far more powerful than any weapon ever used before. The news of
5760-459: Is abundant across the southeastern United States in summer, as the rainfall often comes in quick, but intense downpours. The mid-South, especially Tennessee, and the northern halves of Mississippi, Alabama, and Georgia, have maximum monthly rainfall amounts in winter and spring, owing to copious Gulf moisture and clashes between warm, moist air from the Gulf of Mexico and cold, dry air from Canada during
5952-759: Is also an NCAA Division I conference made up of Southeastern college teams, including the: Alabama Crimson Tide , Arkansas Razorbacks , Auburn Tigers , Florida Gators , Georgia Bulldogs , Kentucky Wildcats , LSU Tigers , Ole Miss Rebels , Mississippi State Bulldogs , South Carolina Gamecocks , Tennessee Volunteers , and Vanderbilt Commodores . The Sugar Bowl , Orange Bowl , Peach Bowl , Citrus Bowl , and Music City Bowl , are notable college football bowls held in Southeastern cities. 34°N 85°W / 34°N 85°W / 34; -85 History of nuclear weapons Building on major scientific breakthroughs made during
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6144-628: Is characterized by relatively level plains dotted by rolling hills, and the Western Highland Rim and western Nashville Basin are covered with uneven rounded knobs with steep ravines separated by meandering streams. The Nashville Basin has rich, fertile farmland, and porous limestone bedrock very close to the surface underlies both the Nashville Basin and Eastern Highland Rim. This results in karst that forms numerous caves, sinkholes, depressions, and underground streams. West of
6336-419: Is dominated by the health care , music , finance , automotive , chemical , electronics , and tourism sectors, and cattle , soybeans , poultry , corn , and cotton are its primary agricultural products. Tennessee has played a major role in the development of many forms of popular music , including country , blues , rock and roll , soul , and gospel . Tennessee derives its name most directly from
6528-485: Is far enough from the coast to avoid any direct impact from a hurricane, its location makes it susceptible to the remnants of tropical cyclones , which weaken over land and can cause significant rainfall. The state annually averages about 50 days of thunderstorms, which can be severe with large hail and damaging winds. Tornadoes are possible throughout the state, with West and Middle Tennessee the most vulnerable. The state averages 15 tornadoes annually. They can be severe, and
6720-783: Is in the Green River watershed. All three of these basins are tributaries of the Ohio River watershed. Most of West Tennessee is in the Lower Mississippi River watershed. The entirety of the state is in the Mississippi River watershed , except for a small sliver near the southeastern corner traversed by the Conasauga River , which is part of the Mobile Bay watershed. Tennessee is within
6912-645: Is known as the Trail of Tears , and an estimated 4,000 died along the way. As settlers pushed west of the Cumberland Plateau, a slavery-based agrarian economy took hold in these regions. Cotton planters used extensive slave labor on large plantation complexes in West Tennessee's fertile and flat terrain after the Jackson Purchase. Cotton also took hold in the Nashville Basin during this time. Entrepreneurs such as Montgomery Bell used slaves in
7104-455: Is no official U.S. government definition for the region, and it is defined variably among agencies and organizations. The history of the present-day Southeastern United States dates to the dawn of civilization in approximately 11,000 BC or 13,000 BC. The earliest artifacts from the region were from the Clovis culture . Prior to the arrival of European colonialists, Native Americans occupied
7296-574: Is relatively distinct, but the western escarpment is irregular, containing several long, crooked stream valleys separated by rocky cliffs with numerous waterfalls . The Cumberland Mountains , with peaks above 3,500 feet (1,100 m), comprise the northeastern part of the Appalachian Plateau in Tennessee, and the southeastern part of the Cumberland Plateau is divided by the Sequatchie Valley . The Cumberland Trail traverses
7488-581: Is the most biodiverse national park, and the Duck River is the most biologically diverse waterway in North America. The Nashville Basin is renowned for its diversity of flora and fauna. Tennessee is home to 340 species of birds, 325 freshwater fish species, 89 mammals, 77 amphibians, and 61 reptiles. Forests cover about 52% of Tennessee's land area, with oak–hickory the dominant type. Appalachian oak–pine and cove hardwood forests are found in
7680-626: Is twice bisected by the Tennessee River , and the Mississippi River forms its western border. The Great Smoky Mountains National Park , the nation's most visited national park, is in eastern Tennessee. Tennessee is rooted in the Watauga Association , a 1772 frontier pact generally regarded as the first constitutional government west of the Appalachian Mountains . Its name derives from Tanasi ( ᏔᎾᏏ ),
7872-400: Is water. It is the 16th smallest state in land area. The state is about 440 miles (710 km) long from east to west and 112 miles (180 km) wide from north to south. Tennessee is geographically, culturally, economically, and legally divided into three Grand Divisions : East Tennessee , Middle Tennessee , and West Tennessee . It borders eight other states: Kentucky and Virginia to
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8064-522: The Manumission Intelligencier (later The Emancipator ), the nation's first exclusively anti-slavery newspaper. At the onset of the American Civil War , most Middle and West Tennesseans favored efforts to preserve their slavery-based economies, but many Middle Tennesseans were initially skeptical of secession. In East Tennessee, most people favored remaining in the Union. In 1860, slaves composed about 25% of Tennessee's population,
8256-637: The American Southeast or simply the Southeast , is a geographical region of the United States located in the eastern portion of the Southern United States and the southern portion of the Eastern United States . The region includes a core of states that reaches north to Maryland and West Virginia , bordering the Ohio River and Mason–Dixon line , and stretches west to Arkansas and Louisiana . There
8448-490: The Appalachian Mountains in an effort to mitigate conflicts with the Natives. But migration across the mountains continued, and the first permanent European settlers began arriving in northeastern Tennessee in the late 1760s. Most of them were English , but nearly 20% were Scotch-Irish . They formed the Watauga Association in 1772, a semi-autonomous representative government, and three years later reorganized themselves into
8640-644: The Battle of Kings Mountain in South Carolina, where they defeated the British. Three counties of the Washington District broke off from North Carolina in 1784 and formed the State of Franklin . Efforts to obtain admission to the Union failed, and the counties, now numbering eight, rejoined North Carolina by 1788. North Carolina ceded the area to the federal government in 1790, after which it
8832-952: The Blue Ridge Mountains , Ridge-and-Valley Appalachians , and Cumberland Plateau , part of the Appalachian Mountains ; the Highland Rim and Nashville Basin , part of the Interior Low Plateaus of the Interior Plains ; and the East Gulf Coastal Plain , part of the Atlantic Plains . Other regions include the southern tip of the Cumberland Mountains , the Western Tennessee Valley , and
9024-704: The Chattanooga campaign , Confederates attempted to besiege the Army of the Cumberland into surrendering, but reinforcements from the Army of the Tennessee under the command of Grant, William Tecumseh Sherman , and Joseph Hooker arrived. The Confederates were driven from the city at the battles of Lookout Mountain and Missionary Ridge in November 1863. Despite Unionist sentiment in East Tennessee, Confederates held
9216-758: The Cherokee town of Tanasi (or "Tanase", in syllabary : ᏔᎾᏏ) in present-day Monroe County, Tennessee , on the Tanasi River, now known as the Little Tennessee River . In 1567, Spanish explorer Captain Juan Pardo and his party encountered a Native American village named "Tanasqui" in the area while traveling inland from modern-day South Carolina ; however, it is unknown if this was the same settlement as Tanasi. The town appeared on British maps as early as 1725. Recent research suggests that
9408-531: The Cherokee National Forest , the Great Smoky Mountains National Park , and several federal wilderness areas and state parks. The Appalachian Trail roughly follows the North Carolina state line before shifting westward into Tennessee. Stretching west from the Blue Ridge Mountains for about 55 miles (89 km) are the Ridge-and-Valley Appalachians , also known as the Tennessee Valley or Great Valley of East Tennessee. This area consists of linear parallel ridges separated by valleys that trend northeast to southwest,
9600-458: The Colony of South Carolina built Fort Loudoun on the Little Tennessee River in 1756, the first British settlement in what is now Tennessee and the westernmost British outpost to that date. Hostilities erupted between the British and the Cherokees into an armed conflict , and a siege of the fort ended with its surrender in 1760. After the French and Indian War , Britain issued the Royal Proclamation of 1763 , which forbade settlements west of
9792-405: The Confederacy , and most of the eastern region harboring pro - Union sentiment. As a result, Tennessee was the last state to officially secede from the Union and join the Confederacy , and the first former Confederate state readmitted to the Union after the war had ended during the Reconstruction era . During the 20th century, Tennessee transitioned from a predominantly agrarian society to
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#17327650330559984-428: The Emancipation Proclamation was announced, Tennessee was largely held by Union forces and thus not among the states enumerated, so it freed no slaves there. Andrew Johnson declared all slaves in Tennessee free on October 24, 1864. On February 22, 1865, the legislature approved an amendment to the state constitution prohibiting slavery, which was approved by voters the following month, and would go into effect later on in
10176-425: The Fat Man plutonium implosion bomb. In early 1943 Oppenheimer determined that two projects should proceed forwards: the Thin Man project (plutonium gun) and the Fat Man project (plutonium implosion). The plutonium gun was to receive the bulk of the research effort, as it was the project with the most uncertainty involved. It was assumed that the uranium gun-type bomb could then be adapted from it. In December 1943
10368-409: The Great Smoky Mountains , Bald Mountains , Unicoi Mountains , Unaka Mountains , and Iron Mountains . These mountains, which average 5,000 feet (1,500 m) above sea level in Tennessee, contain some of the highest elevations in eastern North America. The state's border with North Carolina roughly follows the highest peaks of this range, including Kuwohi. Most of the Blue Ridge area is protected by
10560-444: The Hanford Site to transform uranium-238 into plutonium for a bomb. The simplest form of nuclear weapon is a gun-type fission weapon , where a sub-critical mass would be shot at another sub-critical mass. The result would be a super-critical mass and an uncontrolled chain reaction that would create the desired explosion. The weapons envisaged in 1942 were the two gun-type weapons, Little Boy (uranium) and Thin Man (plutonium), and
10752-426: The Ku Klux Klan , which was founded in December 1865 in Pulaski as a vigilante group to advance former Confederates' interests. In 1870, Southern Democrats regained control of the state legislature, and over the next two decades, passed Jim Crow laws to enforce racial segregation . A total of 251 lynchings , predominately of Black people, took place in Tennessee. A number of epidemics swept through Tennessee in
10944-438: The Mississippi Alluvial Plain . The state's highest point, which is also the third-highest peak in eastern North America, is Kuwohi , at 6,643 feet (2,025 m) above sea level. Its lowest point, 178 feet (54 m), is on the Mississippi River at the Mississippi state line in Memphis. Tennessee has the most caves in the United States, with more than 10,000 documented. Geological formations in Tennessee largely correspond with
11136-421: The Muscogee Creek , Yuchi , and Shawnee . By the early 18th century, most Natives in Tennessee had disappeared, most likely wiped out by diseases introduced by the Spaniards. The Cherokee began migrating into what is now eastern Tennessee from what is now Virginia in the latter 17th century, possibly to escape expanding European settlement and diseases in the north. They forced the Creek, Yuchi, and Shawnee out of
11328-420: The Royal Colonial Boundary of 1665 , but due to faulty surveys, begins north of this line in the east, and to the west, gradually veers north before shifting south onto the actual 36°30′ parallel at the Tennessee River in West Tennessee. Uncertainties in the latter 19th century over the location of the state's border with Virginia culminated in the U.S. Supreme Court settling the matter in 1893 , which resulted in
11520-430: The Tennessee Centennial and International Exposition in Nashville. A full-scale replica of the Parthenon in Athens was designed by architect William Crawford Smith and constructed for the celebration, owing to the city's reputation as the "Athens of the South". Due to increasing racial segregation and poor standards of living, many black Tennesseans fled to industrial cities in the Northeast and Midwest as part of
11712-443: The Tennessee Valley Authority (TVA) was created in 1933 to provide electricity, jobs, flood control, improved waterway navigation, agricultural development, and economic modernization to the Tennessee River Valley . The TVA built several hydroelectric dams in the state in the 1930s and 1940s, which inundated communities and thousands of farmland acreage, and forcibly displaced families via eminent domain . The agency quickly grew into
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#173276503305511904-495: The Thirteen Colonies who sent delegates to the Second Continental Congress in Philadelphia , which declared independence from the British Crown , which was established with the colonies' victory over the British in the American Revolutionary War . During the American Civil War , the Confederate States of America consisted of the southeastern states of Florida, Alabama, Georgia, Mississippi, Tennessee, South Carolina, North Carolina, Virginia, Louisiana, and Arkansas. Texas
12096-399: The Tube Alloys project: the world's first nuclear weapons project. The Maud Committee was set up following the work of Frisch and Rudolf Peierls who calculated uranium-235's critical mass and found it to be much smaller than previously thought which meant that a deliverable bomb should be possible. In the February 1940 Frisch–Peierls memorandum they stated that: "The energy liberated in
12288-432: The U.S. Army Corps of Engineers operate many hydroelectric dams on the Tennessee and Cumberland rivers and their tributaries, which form large reservoirs throughout the state. About half the state's land area is in the Tennessee Valley drainage basin of the Tennessee River. The Cumberland River basin covers the northern half of Middle Tennessee and a small portion of East Tennessee. A small part of north-central Tennessee
12480-414: The U.S. Navy captured the Tennessee and Cumberland rivers in February 1862 at the battles of Fort Henry and Fort Donelson . Grant then proceeded south to Pittsburg Landing and held off a Confederate counterattack at Shiloh in April in what was at the time the bloodiest battle of the war. Memphis fell to the Union in June after a naval battle on the Mississippi River. Union strength in Middle Tennessee
12672-475: The United States Virgin Islands , and Virginia . There is no official United States Census Bureau definition of the Southeastern United States. They instead divide a larger region which includes Texas , Oklahoma , Maryland , Delaware , Washington, D.C., and West Virginia , designated as "the South," into three separate subregions, none of which are conventionally considered to define the Southeast. The nonprofit American Association of Geographers defines
12864-399: The Washington District to support the cause of the American Revolutionary War . The next year, after an unsuccessful petition to Virginia, North Carolina agreed to annex the Washington District to provide protection from Native American attacks. In 1775, Richard Henderson negotiated a series of treaties with the Cherokee to sell the lands of the Watauga settlements at Sycamore Shoals on
13056-405: The "Cotton Capital of the World" during the late 19th century, and Nashville, Knoxville, and several smaller cities saw modest industrialization. Northerners also began exploiting the coalfields and mineral resources in the Appalachian Mountains. To pay off debts and alleviate overcrowded prisons, the state turned to convict leasing , providing prisoners to mining companies as strikebreakers , which
13248-416: The 1930s, the United Kingdom began the world's first nuclear weapons research project, codenamed Tube Alloys , in 1941, during World War II . The United States, in collaboration with the United Kingdom, initiated the Manhattan Project the following year to build a weapon using nuclear fission. The project also involved Canada. In August 1945, the atomic bombings of Hiroshima and Nagasaki were conducted by
13440-438: The 1940s, promotion of different industries, and federal spending on defense and space programs, the Southeast saw further economic transformation in the ensuing years and decades of the 20th century. The Southeast benefitted from its business and warm climate in its population growth during the late 20th century, as it helped in attracting job seekers and retirees from other U.S. regions. Florida in particular went from being
13632-426: The 1950s, and the number of states with nuclear capabilities has gradually grown larger in the decades since. A nuclear weapon , also known as an atomic bomb, possesses enormous destructive power from nuclear fission , or a combination of fission and fusion reactions . In the first decades of the 20th century, physics was revolutionized with developments in the understanding of the nature of atoms including
13824-550: The 27th most populated U.S. state in 1940 with 1.9 million residents, to being the 4th most populated U.S. state and having nearly 13 million residents in 2000 . Southeast states such as North Carolina and Georgia saw large population growth increases as well during the late 20th century. The United States Geological Survey defines Southeastern United States as including the states of Alabama , Arkansas , Florida , Georgia , Kentucky , Louisiana , Mississippi , North Carolina , South Carolina , Tennessee , Puerto Rico ,
14016-676: The 36th and final state necessary to ratify the Nineteenth Amendment to the United States Constitution , which gave women the right to vote . In 1925, John T. Scopes , a high school teacher in Dayton , was tried and convicted for teaching evolution in violation of the state's recently passed Butler Act . Scopes was prosecuted by former Secretary of State and presidential candidate William Jennings Bryan and defended by attorney Clarence Darrow . The case
14208-675: The 53 °F (12 °C) range. As one nears the Gulf of Mexico, coastal plain, and coastal areas of Georgia and the Carolinas, winters become warm, with daytime highs near or over 60 °F (16 °C). Once in Florida, daytime highs are above 70 °F (21 °C) from just south of St. Augustine on the Atlantic coast and Clearwater on the Gulf Of Mexico. Extreme southern Florida has the warmest winter temperatures (mid 70's F) in
14400-708: The Atlanta Summer Olympic Games were held on the Ocoee River in Polk County . In 2002, Tennessee amended its constitution to establish a lottery . In 2006, the state constitution was amended to outlaw same-sex marriage . This amendment was invalidated by the 2015 U.S. Supreme Court case Obergefell v. Hodges . On December 23, 2008, the largest industrial waste spill in United States history occurred at TVA's Kingston Fossil Plant when more than 1.1 billion gallons of coal ash slurry
14592-797: The Atlanta area; the two largest research parks in the country: Research Triangle Park in the Triangle area of North Carolina (the world's largest) and the Cummings Research Park in Huntsville, Alabama (the world's fourth largest); corporate headquarters of Bank of America , Truist Financial , and Wells Fargo in Charlotte, North Carolina , the corporate headquarters of Verso Paper and FedEx in Memphis, Tennessee as well as
14784-482: The Atlantic. In their second publication on nuclear fission in February 1939, Hahn and Strassmann predicted the existence and liberation of additional neutrons during the fission process, opening up the possibility of a nuclear chain reaction . After learning about the German fission in 1939, Leo Szilard concluded that uranium would be the element which can realize his 1933 idea about nuclear chain reaction. In
14976-554: The Blue Ridge Mountains and Cumberland Plateau, and bottomland hardwood forests are common throughout the Gulf Coastal Plain. Pine forests are also found throughout the state. The Southern Appalachian spruce–fir forest in the highest elevations of the Blue Ridge Mountains is considered the second-most endangered ecosystem in the country. Some of the last remaining large American chestnut trees grow in
15168-572: The Blue Ridge Mountains and on the Cumberland Plateau. Tennessee has the third-highest number of amphibian species, with the Great Smoky Mountains home to the most salamander species in the world. The state ranks second in the nation for the diversity of its freshwater fish species. Most of Tennessee has a humid subtropical climate , with the exception of some of the higher elevations in the Appalachians, which are classified as
15360-609: The British mission of 19 scientists arrived in Los Alamos. Hans Bethe became head of the Theoretical Division. In April 1944 it was found by Emilio Segrè that the plutonium-239 produced by the Hanford reactors had too high a level of background neutron radiation, and underwent spontaneous fission to a very small extent, due to the unexpected presence of plutonium-240 impurities. If such plutonium were used in
15552-499: The Charlotte area along with the sports operations headquarters and media outlets. Tracks in the region include Atlanta Motor Speedway , Bristol Motor Speedway , Charlotte Motor Speedway , Darlington Raceway , Daytona International Speedway , Homestead-Miami Speedway , Martinsville Speedway , Nashville Superspeedway , North Wilkesboro Speedway , Richmond Raceway , and Talladega Superspeedway . The southeast also hosts two of
15744-510: The Cherokees adapted the name from the Yuchi word Tana-tsee-dgee , meaning "brother-waters-place" or "where-the-waters-meet". The modern spelling, Tennessee , is attributed to Governor James Glen of South Carolina, who used this spelling in his official correspondence during the 1750s. In 1788, North Carolina created " Tennessee County ", and in 1796, a constitutional convention , organizing
15936-727: The Chickasaw to sell the land between the Mississippi and Tennessee Rivers to the United States, which included all of West Tennessee and became known as the " Jackson Purchase ". The Cherokee moved their capital from Georgia to the Red Clay Council Grounds in southeastern Tennessee in 1832, due to new laws forcing them from their previous capital at New Echota . In 1838 and 1839, U.S. troops forcibly removed thousands of Cherokees and their black slaves from their homes in southeastern Tennessee and forced them to march to Indian Territory in modern-day Oklahoma . This event
16128-470: The Departments of State and Defense, there was considerable confusion over who actually knew the size of the stockpile, and some people chose not to know for fear they might disclose the number accidentally. The notion of using a fission weapon to ignite a process of nuclear fusion can be dated back to September 1941, when it was first proposed by Enrico Fermi to his colleague Edward Teller during
16320-569: The Fourteenth Amendment before its readmission to the Union, it was the only former secessionist state that did not have a military governor during Reconstruction . The Radical Republicans seized control of the state government toward the end of the war, and appointed William G. "Parson" Brownlow governor. Under Brownlow's administration from 1865 to 1869, the legislature allowed African American men to vote, disenfranchised former Confederates, and with martial law, took action against
16512-764: The French Lick. These settlers constructed Fort Nashborough , which they named for Francis Nash , a brigadier general of the Continental Army . The next year, the settlers signed the Cumberland Compact , which established a representative government for the colony called the Cumberland Association . This settlement later grew into the city of Nashville. That same year John Sevier led a group of Overmountain Men from Fort Watauga to
16704-767: The Highland Rim is the Western Tennessee Valley , which consists of about 10 miles (16 km) in width of hilly land along the banks of the Tennessee River. West of this is the Gulf Coastal Plain , a broad feature that begins at the Gulf of Mexico and extends northward into southern Illinois . The plain begins in the east with low rolling hills and wide stream valleys, known as the West Tennessee Highlands, and gradually levels out to
16896-500: The Nashville Basin and are being used to help breed blight -resistant trees. Middle Tennessee is home to many unusual and rare ecosystems known as cedar glades , which occur in areas with shallow limestone bedrock that is largely barren of overlying soil and contain many endemic plant species. Common mammals found throughout Tennessee include white-tailed deer , red and gray foxes , coyotes , raccoons , opossums , wild turkeys , rabbits , and squirrels . Black bears are found in
17088-523: The South to have some of the lowest unemployment rates in the United States. In Alabama, there is the large-scale manufacturing project owned by the German steel megacorporation ThyssenKrupp , which operates a massive, state-of-the-art facility in Mobile . Even with certain states and areas in the Southeast doing well economically, many Southeast states and areas still have a high poverty rate when compared to
17280-600: The Southeast, out of a total of ten such areas in the United States: Two others tie some areas on the margins of the Southeast to urban centers in other regions: These are the combined statistical areas of the Southeastern region which exceed 1 million in population according to the United States Census Bureau 's 2016 estimates. Note that the metropolitan areas of Tampa and Richmond are not included in any CSAs, so they are included in
17472-709: The Southeast: the Atlanta Braves , Baltimore Orioles , Miami Marlins , Tampa Bay Rays , and Washington Nationals . The Southeast has five National Hockey League (NHL) franchises: the Carolina Hurricanes , Florida Panthers , Nashville Predators , Tampa Bay Lightning , and Washington Capitals . Major League Soccer currently holds six clubs: Atlanta United FC , Charlotte FC , DC United , Inter Miami CF , Nashville SC and Orlando City SC . The majority of NASCAR teams are headquartered in
17664-497: The Southeastern United States as including Alabama, Florida, Georgia, Kentucky, Maryland, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, and West Virginia. The OSBO (Organization Supporting Business Owners) uses the same states, but includes Arkansas and Louisiana. The states of Delaware and Missouri , along with the U.S. capital of Washington, D.C., are also sometimes added in definitions of
17856-597: The Soviets was primarily one of resources—they had not scouted out uranium resources in the Soviet Union and the U.S. had made deals to monopolise the largest known (and high purity) reserves in the Belgian Congo . The USSR used penal labour to mine the old deposits in Czechoslovakia —now an area under their control—and searched for other domestic deposits (which were eventually found). Two days after
18048-618: The U.S. The news of the first Soviet bomb was announced to the world first by the United States, which had detected atmospheric radioactive traces generated from its test site in the Kazakh Soviet Socialist Republic . The loss of the American monopoly on nuclear weapons marked the first tit-for-tat of the nuclear arms race . With the Atomic Energy Act of 1946 , the U.S. Congress established
18240-454: The U.S. Supreme Court ruled racial segregation in public schools unconstitutional in Brown v. Board of Education in 1954, Oak Ridge High School in 1955 became the first school in Tennessee to be integrated . The next year, nearby Clinton High School was integrated, and Tennessee National Guard troops were sent in after pro-segregationists threatened violence. Between February and May 1960,
18432-489: The U.S. and Canada. Scientific development was centralized in a secret laboratory at Los Alamos . For a fission weapon to operate, there must be sufficient fissile material to support a chain reaction, a critical mass . To separate the fissile uranium-235 isotope from the non-fissile uranium-238, two methods were developed which took advantage of the fact that uranium-238 has a slightly greater atomic mass: electromagnetic separation and gaseous diffusion . Another secret site
18624-479: The U.S. nationally. In 2017, seven Southeast states were in the top ten nationwide when it came to having the highest poverty rate. Research Triangle Park in the Raleigh–Durham urban area of North Carolina, has emerged as a major hub of technology, governmental, and biotechnological research and development. The Cummings Research Park in the Huntsville, Alabama area, is the second-largest research complex in
18816-621: The U.S. project were all volunteers and none were Soviet citizens. One of the most valuable, Klaus Fuchs , was a German émigré theoretical physicist who had been part of the early British nuclear efforts and the UK mission to Los Alamos. Fuchs had been intimately involved in the development of the implosion weapon and passed on detailed cross-sections of the Trinity device to his Soviet contacts. Other Los Alamos spies—none of whom knew each other—included Theodore Hall and David Greenglass . The information
19008-581: The United States and the other Allies. During the war, information had been pouring in from a number of volunteer spies involved with the Manhattan Project (known in Soviet cables under the code-name of Enormoz ), and the Soviet nuclear physicist Igor Kurchatov was carefully watching the Allied weapons development. It came as no surprise to Stalin when Truman had informed him at the Potsdam conference that he had
19200-458: The United States is dominated by the humid subtropical climate (Cfa/Cwa). As one nears the southern portion of Florida, the climate gradually becomes tropical, as the winter season and all months have a mean temperature above 64.4 °F (18.0 °C) (the defined coldest monthly mean temperature of tropical climates). Seasonally, summers are generally hot and humid throughout the entire region. The Bermuda High pumps hot and moist air mass from
19392-518: The United States, scientists at Columbia University in New York City decided to replicate the experiment and on January 25, 1939, conducted the first nuclear fission experiment in the United States in the basement of Pupin Hall . The following year, they identified the active component of uranium as being the rare isotope uranium-235 . Between 1939 and 1940, Joliot-Curie 's team applied for
19584-399: The United States, with British consent, against Japan at the close of that war, standing to date as the only use of nuclear weapons in hostilities. The Soviet Union started development shortly after with their own atomic bomb project , and not long after, both countries were developing even more powerful fusion weapons known as hydrogen bombs . Britain and France built their own systems in
19776-492: The United States. Winters tend to be very dry and sunny across Florida, with a gradual increase in winter rainfall with increasing latitude, especially west of the Appalachian Mountains. The Southeast economically has changed dramatically since the late 20th century. There has been a boom in its service economy , manufacturing base, high technology industries, and the financial sector. Examples of this include
19968-532: The Woodland period. Later generations of Woodland peoples constructed the first mounds. Rapid civilizational development occurred during the Mississippian period, when Indigenous peoples developed organized chiefdoms and constructed numerous ceremonial structures throughout the state. Spanish conquistadors who explored the region in the 16th century encountered some of the Mississippian peoples, including
20160-564: The area for most of the war. A few days after the fall of Chattanooga, Confederates led by James Longstreet unsuccessfully campaigned to take control of Knoxville by attacking Union General Ambrose Burnside 's Fort Sanders . The capture of Chattanooga allowed Sherman to launch the Atlanta campaign from the city in May 1864. The last major battles in the state came when Army of Tennessee regiments under John Bell Hood invaded Middle Tennessee in
20352-625: The atomic bombing of Japan was recorded as a decision of the Anglo-American Combined Policy Committee . Truman hoped it would send a strong message that would end in the capitulation of the Japanese leadership and avoid a lengthy invasion of the islands. Truman and his Secretary of State James F. Byrnes were also intent on ending the Pacific war before the Soviets could enter it, given that Roosevelt had promised Stalin control of Manchuria if he joined
20544-747: The banks of the Watauga River . An agreement to sell land for the Transylvania Colony , which included the territory in Tennessee north of the Cumberland River, was also signed. Later that year, Daniel Boone , under Henderson's employment, blazed a trail from Fort Chiswell in Virginia through the Cumberland Gap , which became part of the Wilderness Road , a major thoroughfare into Tennessee and Kentucky. The Chickamauga,
20736-484: The bombing of Nagasaki, the U.S. government released an official technical history of the Manhattan Project, authored by Princeton physicist Henry DeWolf Smyth , known colloquially as the Smyth Report . The sanitized summary of the wartime effort focused primarily on the production facilities and scale of investment, written in part to justify the wartime expenditure to the American public. The Soviet program, under
20928-408: The civilian Atomic Energy Commission (AEC) to take over the development of nuclear weapons from the military, and to develop nuclear power. The AEC made use of many private companies in processing uranium and thorium and in other urgent tasks related to the development of bombs. Many of these companies had very lax safety measures and employees were sometimes exposed to radiation levels far above what
21120-633: The cold season. In this area, December, March, or April are typically the wettest months; August to October, the driest months (for example, in Tupelo, MS , Huntsville, AL and Memphis, TN ). Winters are cool in the northern areas like Tennessee , Virginia , Maryland , and western North Carolina , with average high temperatures in the 45 °F (7 °C) range in January. Farther south, winters become milder across interior eastern North and South Carolina, Georgia, and Alabama, with average January highs in
21312-863: The corporate headquarters of the Coca Cola Company , Delta Airlines , the Home Depot and United Parcel Service in Atlanta , Georgia. Dillards , along with Heifer International , is headquartered in Little Rock, Arkansas . Walmart is also headquartered in Arkansas . In 2020, Fortune 500 companies having headquarters in the Southeast region include: 22 in Virginia, 18 in Georgia, 18 in Florida, 13 in North Carolina, and 10 in Tennessee. This economic expansion has enabled parts of
21504-404: The country's largest electric utility and initiated a period of dramatic economic growth and transformation that brought many new industries and employment opportunities to the state. During World War II , East Tennessee was chosen for the production of weapons-grade fissile enriched uranium as part of the Manhattan Project , a research and development undertaking led by the U.S. to produce
21696-457: The cultural groups who inhabited the area before European contact are unknown, but archaeologists have named several distinct cultural phases, including the Archaic (8000–1000 BC), Woodland (1000 BC–1000 AD), and Mississippian (1000–1600 AD) periods. The Archaic peoples first domesticated dogs, and plants such as squash , corn , gourds , and sunflowers were first grown in Tennessee during
21888-614: The discoveries in atomic theory by John Dalton . Around the turn of the 20th century, it was discovered by Hans Geiger and Ernest Marsden and then Ernest Rutherford , that atoms had a highly dense, very small, charged central core called an atomic nucleus. In 1898, Pierre and Marie Curie discovered that pitchblende , an ore of uranium , contained a substance—which they named radium —that emitted large amounts of radiation . Ernest Rutherford and Frederick Soddy identified that atoms were breaking down and turning into different elements. Hopes were raised among scientists and laymen that
22080-405: The division between Middle and West Tennessee. Tennessee's eastern boundary roughly follows the highest crests of the Blue Ridge Mountains , and the Mississippi River forms its western boundary. Due to flooding of the Mississippi that has changed its path, the state's western boundary deviates from the river in some places. The northern border was originally defined as 36°30′ north latitude and
22272-453: The division of Bristol between the two states. An 1818 survey erroneously placed Tennessee's southern border 1 mile (1.6 km) south of the 35th parallel ; Georgia legislators continue to dispute this placement , as it prevents Georgia from accessing the Tennessee River. Marked by a diversity of landforms and topographies, Tennessee features six principal physiographic provinces , from east to west, which are part of three larger regions:
22464-518: The eastern escarpment of the Cumberland Plateau and Cumberland Mountains. West of the Cumberland Plateau is the Highland Rim , an elevated plain that surrounds the Nashville Basin , a geological dome . Both of these physiographic provinces are part of the Interior Low Plateaus of the larger Interior Plains . The Highland Rim is Tennessee's largest geographic region, and is often split into eastern and western halves. The Eastern Highland Rim
22656-446: The element barium after bombarding uranium with neutrons. Lise Meitner and Otto Robert Frisch correctly interpreted these results as being due to the splitting of the uranium atom. Frisch confirmed this experimentally on January 13, 1939. They gave the process the name "fission" because of its similarity to the splitting of a cell into two new cells. Even before it was published, news of Meitner's and Frisch's interpretation crossed
22848-496: The elements around us could contain tremendous amounts of unseen energy, waiting to be harnessed. H. G. Wells was inspired by the work of Rutherford to write about an "atom bomb" in a 1914 novel, The World Set Free , which appeared shortly before the First World War. In a 1924 article, Winston Churchill speculated about the possible military implications: "Might not a bomb no bigger than an orange be found to possess
23040-541: The entirety of East Tennessee from northwestern Alabama to southwestern Virginia, and is considered one of the most active zones in the Southeastern United States, frequently producing low-magnitude earthquakes. The New Madrid seismic zone in the northwestern part of the state produced a series of devastating earthquakes between December 1811 and February 1812 that formed Reelfoot Lake near Tiptonville . The southwestern Blue Ridge Mountains lie within Tennessee's eastern edge, and are divided into several subranges, namely
23232-477: The espionage information as a way to double-check the progress of his scientists, and in his effort for duplication of the American project even rejected more efficient bomb designs in favor of ones that more closely mimicked the tried-and-true Fat Man bomb used by the U.S. against Nagasaki. On August 29, 1949, the effort brought its results, when the USSR successfully tested its first fission bomb, dubbed " Joe-1 " by
23424-471: The explosion of such a super-bomb...will, for an instant, produce a temperature comparable to that of the interior of the sun. The blast from such an explosion would destroy life in a wide area. The size of this area is difficult to estimate, but it will probably cover the centre of a big city." Edgar Sengier , a director of Shinkolobwe Mine in the Congo which produced by far the highest quality uranium ore in
23616-536: The fact that other states had not yet ratified it. Johnson became vice president when Lincoln was reelected , and president after Lincoln's assassination in May 1865. On July 24, 1866, Tennessee became the first Confederate state to have its elected members readmitted to Congress. The years after the Civil War were characterized by tension and unrest between blacks and former Confederates, the worst of which occurred in Memphis in 1866 . Because Tennessee had ratified
23808-479: The fall of 1864 in an effort to draw Sherman back. They were checked by John Schofield at Franklin in November and completely dispersed by George Thomas at Nashville in December. On April 27, 1865, the worst maritime disaster in American history occurred when the Sultana steamboat, which was transporting freed Union prisoners, exploded in the Mississippi River north of Memphis, killing 1,168 people. When
24000-420: The fastest-growing area of the United States economically. Multiculturalism has become more mainstream in the Southeastern states. African Americans remain a dominant demographic, at around 30% of the total population of the Southeast. Cities along this corridor from north to south include Raleigh-Durham area, Greensboro, Charlotte, Spartanburg, Greenville, Atlanta, and Montgomery. Most of the southeastern part of
24192-637: The first wave of the Great Migration between 1915 and 1930. Many residents of rural parts of Tennessee relocated to larger cities during this time for more lucrative employment opportunities. As part of the Temperance movement , Tennessee became the first state in the nation to effectively ban the sale, transportation, and production of alcohol in a series of laws passed between 1907 and 1917. During Prohibition , illicit production of moonshine became extremely common in East Tennessee, particularly in
24384-606: The general direction of the entire Appalachian range. Most of these ridges are low, but some of the higher ones are commonly called mountains. Numerous tributaries join to form the Tennessee River in the Ridge and Valley region. The Cumberland Plateau rises to the west of the Tennessee Valley, with an average elevation of 2,000 feet (610 m). This landform is part of the larger Appalachian Plateau and consists mostly of flat-topped tablelands . The plateau's eastern edge
24576-409: The heat, radiation, and blast effects. Many tens of thousands would later die of radiation sickness and related cancers . Truman promised a "rain of ruin" if Japan did not surrender immediately, threatening to systematically eliminate their ability to wage war. On August 15, Emperor Hirohito announced Japan's surrender . The Soviet Union was not invited to share in the new weapons developed by
24768-546: The identification and mitigation of a key graphite impurity (boron) through a joint collaboration with graphite suppliers. The beginning of the American research about nuclear weapons (The Manhattan Project) started with the Einstein–Szilárd letter . With a scientific team led by J. Robert Oppenheimer , the Manhattan project brought together some of the top scientific minds of the day, including exiles from Europe, with
24960-409: The initial stage of an atomic bomb, when it absorbs a neutron, it becomes uranium-239 which decays into neptunium -239, and finally the relatively stable plutonium-239 , which is fissile like uranium-235. After Fermi achieved the world's first sustained and controlled nuclear chain reaction with the creation of the first atomic pile , massive reactors were secretly constructed at what is now known as
25152-627: The invasion. On May 10–11, 1945, the Target Committee at Los Alamos, led by Oppenheimer, recommended Kyoto , Hiroshima , Yokohama , and Kokura as possible targets. Concerns about Kyoto's cultural heritage led to it being replaced by Nagasaki . In late July and early August 1945, a series of leaflets were dropped over several Japanese cities warning them of an imminent destructive attack (though not mentioning nuclear bombs). Evidence suggests that these leaflets were never dropped over Hiroshima and Nagasaki, or were dropped too late, although
25344-524: The juncture of the Holston and French Broad rivers in Knoxville, flows southwest to Chattanooga, and exits into Alabama before reemerging in the western part of the state and flowing north into Kentucky. Its major tributaries include the Clinch , Little Tennessee , Hiwassee , Sequatchie , Elk , Beech , Buffalo , Duck , and Big Sandy rivers. The Cumberland River flows through the north-central part of
25536-538: The largest cities in the Southeastern region of the United States by population, according to the United States Census Bureau in 2015: These are the metropolitan areas of the Southeastern region which exceed one million in population according to the United States Census Bureau 's 2023 estimates:as estimated by the United States Census Bureau Beyond Megalopolis by Virginia Tech 's Metropolitan Institute, an attempt to update Jean Gottmann 's work with current trends, defines two " megapolitan areas " contained within
25728-400: The legislature conducted a census of the territory, which recorded a population of 77,263, including 10,613 slaves, and a poll that showed 6,504 in favor of statehood and 2,562 opposed. Elections for a constitutional convention were held in December 1795, and the delegates convened in Knoxville on January 17, 1796, to begin drafting a state constitution. During this convention, the name Tennessee
25920-421: The lowest share among the states that joined the Confederacy . Tennessee provided more Union troops than any other Confederate state, and the second-highest number of Confederate troops, behind Virginia. Due to its central location, Tennessee was a crucial state during the war and saw more military engagements than any state except Virginia. After Abraham Lincoln was elected president in 1860 , secessionists in
26112-459: The meantime. Uranium appears in nature primarily in two isotopes: uranium-238 and uranium-235 . When the nucleus of uranium-235 absorbs a neutron, it undergoes nuclear fission, releasing energy and, on average, 2.5 neutrons. Because uranium-235 releases more neutrons than it absorbs, it can support a chain reaction and so is described as fissile . Uranium-238, on the other hand, is not fissile as it does not normally undergo fission when it absorbs
26304-403: The minimum amount of material required to sustain the chain reaction and its potential to cause an explosion (British patent 630,726). The patent was not about an atomic bomb per se , as the possibility of chain reaction was still very speculative. Szilard subsequently assigned the patent to the British Admiralty so that it could be covered by the Official Secrets Act . This work of Szilard's
26496-430: The most recent world's fair to be held in the U.S. In 1986, Tennessee held a yearlong celebration of the state's heritage and culture called "Homecoming '86". Tennessee celebrated its bicentennial in 1996 with a yearlong celebration called "Tennessee 200". A new state park that traces the state's history, Bicentennial Mall , was opened at the foot of Capitol Hill in Nashville. The same year, the whitewater slalom events at
26688-535: The mountains, and continued for many decades afterward. Sgt. Alvin C. York of Fentress County became one of the most famous and honored American soldiers of World War I . He received the Congressional Medal of Honor for single-handedly capturing an entire German machine gun regiment during the Meuse–Argonne offensive . On July 9, 1918, Tennessee suffered the worst rail accident in U.S. history when two passenger trains collided head on in Nashville, killing 101 and injuring 171. On August 18, 1920, Tennessee became
26880-437: The nation. Located in Huntsville is the Redstone Arsenal , United States Army Missile Command , the U.S. Space & Rocket Center , NASA 's Marshall Space Flight Center and other key government, military, and aerospace agencies. Tullahoma, TN contains the Arnold Air Force Base. The base is home to the Arnold Engineering Development Complex (AEDC), the most advanced and largest complex of flight simulation test facilities in
27072-448: The new state out of the Southwest Territory , adopted "Tennessee" as the state's name. The first inhabitants of Tennessee were Paleo-Indians who arrived about 12,000 years ago at the end of the Last Glacial Period . Archaeological excavations indicate that the lower Tennessee Valley was heavily populated by Ice Age hunter-gatherers , and Middle Tennessee is believed to have been rich with game animals such as mastodons . The names of
27264-478: The nickname "The Volunteer State" during the War of 1812 , when 3,500 Tennesseans answered a recruitment call by the General Assembly for the war effort. These soldiers, under Andrew Jackson 's command, played a major role in the American victory at the Battle of New Orleans in 1815, the last major battle of the war. Several Tennesseans took part in the Texas Revolution of 1835–36, including Governor Sam Houston and Congressman and frontiersman Davy Crockett , who
27456-453: The north, North Carolina to the east, Georgia , Alabama , and Mississippi on the south, and Arkansas and Missouri on the west. It is tied with Missouri as the state bordering the most other states. Tennessee is trisected by the Tennessee River , and its geographical center is in Murfreesboro . Nearly three–fourths of the state is in the Central Time Zone , with most of East Tennessee on Eastern Time . The Tennessee River forms most of
27648-500: The northwest. Tennessee is the 36th-largest by area and the 15th-most populous of the 50 states. Tennessee's population as of the 2020 United States census is approximately 6.9 million. Tennessee is geographically, culturally, and legally divided into three Grand Divisions of East , Middle , and West Tennessee . Nashville is the state's capital and largest city, and anchors its largest metropolitan area. Tennessee has diverse terrain and landforms, and from east to west, contains
27840-429: The possible use of nuclear weapons against Japan (though some recommended using them as demonstrations in unpopulated areas, most recommended using them against built up targets, a euphemistic term for populated cities), Truman ordered the use of the weapons on Japanese cities. Under the clause of the 1943 Quebec Agreement that specified that nuclear weapons would not be used against another country without mutual consent,
28032-413: The powerful congressional committees in U.S. history. Its two early chairmen, Senator Brien McMahon and Senator Bourke Hickenlooper , both pushed for increased production of nuclear materials and a resultant increase in the American atomic stockpile. The size of that stockpile, which had been low in the immediate postwar years, was a closely guarded secret. Indeed, within the U.S. government, including
28224-455: The production arm of the Manhattan Project in Oak Ridge, which enriched uranium at three major facilities for use in atomic bombs. The first of the bombs was detonated in Alamogordo, New Mexico , in a test code-named Trinity , and the second, nicknamed " Little Boy ", was dropped on Imperial Japan at the end of World War II. After the war, the Oak Ridge National Laboratory became an institution for scientific and technological research. After
28416-465: The production of iron in the Western Highland Rim, and slaves also cultivated such crops as tobacco and corn throughout the Highland Rim. East Tennessee's geography did not allow for large plantations as in the middle and western parts of the state, and as a result, slavery became increasingly rare in the region. A strong abolition movement developed in East Tennessee, beginning as early as 1797, and in 1819, Elihu Embree of Jonesborough began publishing
28608-410: The production power of American industry for the goal of producing fission-based explosive devices before Germany. Britain and the U.S. agreed to pool their resources and information, but the main other Allied power, the Soviet Union (USSR), was not informed. The U.S. made a tremendous investment in the project, then the second largest industrial enterprise ever seen, spread across more than 30 sites in
28800-402: The project, and in 1971, the U.S. Supreme Court sided with the group and established the framework for judicial review of government agencies in the landmark case of Citizens to Preserve Overton Park v. Volpe . TVA's construction of the Tellico Dam in Loudon County became the subject of national controversy in the 1970s when the endangered snail darter fish was reported to be affected by
28992-417: The project. After lawsuits by environmental groups, the debate was decided by the U.S. Supreme Court case Tennessee Valley Authority v. Hill in 1978, leading to amendments of the Endangered Species Act . The 1982 World's Fair was held in Knoxville. Also known as the Knoxville International Energy Exposition, the fair's theme was "Energy Turns the World". The exposition was one of the most successful, and
29184-409: The purposeful distribution of weapons information to all superpowers, but due to a deep distrust of the intentions of the Soviet Union, both in postwar Europe and in general, the policymakers of the United States worked to maintain the American nuclear monopoly. A half-hearted plan for international control was proposed at the newly formed United Nations by Bernard Baruch (The Baruch Plan ), but it
29376-517: The region for several hundred years during the Woodland period . The first Europeans to arrive in the region were conquistadors associated with the Spanish Empire . In 1541, Hernando de Soto journeyed through the southeast and crossed the Mississippi River . The region hosted the first permanent European settlement in North America , with the Kingdom of England establishing Jamestown, Virginia in 1607. Four southeast states, Georgia , North Carolina , South Carolina , and Virginia , were among
29568-438: The region. Because of this, many southern unionists were sent fleeing to nearby Union states, particularly the border state of Kentucky . Other southern unionists, who stayed in Tennessee after the state's secession, either resisted the Confederate cause or eventually joined it. In March 1862, Lincoln appointed native Tennessean and War Democrat Andrew Johnson as military governor of the state. General Ulysses S. Grant and
29760-491: The region: the Atlanta Falcons , Baltimore Ravens , Carolina Panthers , Jacksonville Jaguars , Miami Dolphins , New Orleans Saints , Tampa Bay Buccaneers , Tennessee Titans , and Washington Commanders . The Southeast has seven National Basketball Association (NBA) franchises: the Atlanta Hawks , Charlotte Hornets , Memphis Grizzlies , Miami Heat , New Orleans Pelicans , Orlando Magic , and Washington Wizards . Major League Baseball (MLB) maintains five teams in
29952-426: The rivers in East Tennessee in the early 18th century. The first recorded European expeditions into what is now Tennessee were led by Spanish explorers Hernando de Soto in 1540–1541, Tristan de Luna in 1559, and Juan Pardo in 1566–1567. In 1673, English fur trader Abraham Wood sent an expedition from the Colony of Virginia into Overhill Cherokee territory in modern-day northeastern Tennessee. That same year,
30144-434: The scientific effort to develop the weapon. Beria distrusted his scientists, however, and he distrusted the carefully collected espionage information. As such, Beria assigned multiple teams of scientists to the same task without informing each team of the other's existence. If they arrived at different conclusions, Beria would bring them together for the first time and have them debate with their newfound counterparts. Beria used
30336-463: The state averaging a high of around 90 °F (32 °C). Winters tend to be mild to cool, decreasing in temperature at higher elevations. For areas outside the highest mountains, the average overnight lows are generally near freezing. The highest recorded temperature was 113 °F (45 °C) at Perryville on August 9, 1930, while the lowest recorded temperature was −32 °F (−36 °C) at Mountain City on December 30, 1917. While Tennessee
30528-481: The state government led by Governor Isham Harris sought voter approval to sever ties with the United States, which was rejected in a referendum by a 54–46% margin in February 1861. After the Confederate attack on Fort Sumter in April and Lincoln's call for troops in response, the legislature ratified an agreement to enter a military league with the Confederacy on May 7, 1861. On June 8, with Middle Tennesseans having significantly changed their position, voters approved
30720-413: The state in the early 18th century. The Chickasaw remained confined to West Tennessee, and the middle part of the state contained few Native Americans, although both the Cherokee and the Shawnee claimed the region as their hunting ground. Cherokee peoples in Tennessee were known by European settlers as the Overhill Cherokee because they lived west of the Blue Ridge Mountains. Overhill settlements grew along
30912-601: The state leads the nation in the percentage of total tornadoes that have fatalities. Winter storms such as in 1993 and 2021 occur occasionally, and ice storms are fairly common. Fog is a persistent problem in some areas, especially in East Tennessee. Tennessee is divided into 95 counties , each of which has a county seat . The state has 340 municipalities in total. The Office of Management and Budget designates ten metropolitan areas in Tennessee, four of which extend into neighboring states. Southeastern United States The Southeastern United States , also known as
31104-523: The state's topographic features, and, in general, decrease in age from east to west. The state's oldest rocks are igneous strata more than 1 billion years old found in the Blue Ridge Mountains, and the youngest deposits in Tennessee are sands and silts in the Mississippi Alluvial Plain and river valleys that drain into the Mississippi River. Tennessee is considered seismically active and contains two major seismic zones, although destructive earthquakes rarely occur there. The Eastern Tennessee seismic zone spans
31296-466: The state, emerging in the northeastern Highland Rim, passing through Nashville, turning northwest to Clarksville, and entering Kentucky east of the Tennessee River. Its principal branches in Tennessee are the Obey , Caney Fork , Stones , Harpeth , and Red rivers. The Mississippi River drains nearly all of West Tennessee. Its tributaries are the Obion , Forked Deer , Hatchie , Loosahatchie , and Wolf rivers. The Tennessee Valley Authority (TVA) and
31488-530: The surge in tourism in Florida and along the Gulf Coast ; the numerous new automobile production plants such as Mercedes-Benz in Tuscaloosa ; Hyundai in Montgomery ; Toyota Motors in Blue Springs, Mississippi ; Kia in West Point, Georgia ; BMW production plant in Greer, South Carolina ; Volkswagen in Chattanooga ; GM manufacturing plant in Spring Hill, Tennessee ; with the Nissan North American headquarters in Franklin, Tennessee ; Mercedes-Benz USA ; and Porsche North American headquarters in
31680-443: The suspicious watch of former NKVD chief Lavrenty Beria (a participant and victor in Stalin's Great Purge of the 1930s), would use the Report as a blueprint, seeking to duplicate as much as possible the American effort. The "secret cities" used for the Soviet equivalents of Hanford and Oak Ridge literally vanished from the maps for decades to come. At the Soviet equivalent of Los Alamos, Arzamas-16 , physicist Yuli Khariton led
31872-406: The table without constituent areas. The predominant culture of the Southeast U.S. has its origins with the settlement of the region by European colonists and African slaves during the 17th to 19th centuries, as large groups of English , Scottish , Scotch-Irish , Germans , Spanish , French , and Acadians migrated to the region. Since the late 20th century, the " New South " has emerged as
32064-425: The term. The most populous states in the region as of the 2020 United States census are: Florida (21,538,187), followed by Georgia (10,711,908), and North Carolina (10,439,388). Puerto Rico and the U.S. Virgin Islands are located southeast of Florida, and are considered to be in the South / Southeastern U.S. by the FAA , Agricultural Research Service , and the U.S. National Park Service . These are
32256-425: The test's success was rushed to Truman at the Potsdam Conference , where Churchill was briefed and Soviet Premier Joseph Stalin was informed of the new weapon. On July 26, the Potsdam Declaration was issued containing an ultimatum for Japan: either surrender or suffer "complete and utter destruction", although nuclear weapons were not mentioned. After hearing arguments from scientists and military officers over
32448-666: The three legs of the American Triple Crown : the Kentucky Derby in Louisville , and the Preakness Stakes in Baltimore . The Derby is considered the western leg of the crown and the Preakness is traditionally considered the southern leg. The Atlantic Coast Conference is an NCAA Division I conference with many Southeastern college teams, including the: Clemson Tigers , Duke Blue Devils , Florida State Seminoles , Georgia Tech Yellow Jackets , Louisville Cardinals , Miami Hurricanes , North Carolina Tar Heels , NC State Wolfpack , Virginia Cavaliers , Virginia Tech Hokies , and Wake Forest Demon Deacons . The Southeastern Conference
32640-439: The tropical Atlantic Ocean and eastern Gulf of Mexico westward toward the southeast United States, creating the typical sultry tropical summers. Daytime highs are often in the upper 80s to lower 90s F. Rainfall is summer concentrated along the Gulf Coast and the South Atlantic coast from Norfolk, Virginia southward, reaching a sharp summer monsoon -like pattern over peninsular Florida, with dry winters and wet summers. Sunshine
32832-474: The west. It ends at steep loess bluffs overlooking the Mississippi embayment , the westernmost physiographic division of Tennessee, which is part of the larger Mississippi Alluvial Plain . This flat 10 to 14 miles (16 to 23 km) wide strip is commonly known as the Mississippi Bottoms, and contains lowlands, floodplains , and swamps . Tennessee is drained by three major rivers , the Tennessee , Cumberland , and Mississippi . The Tennessee River begins at
33024-415: The world's first atomic bombs . The planned community of Oak Ridge was built to provide accommodations for the facilities and workers; the site was chosen due to the abundance of TVA electric power, its low population density, and its inland geography and topography, which allowed for the natural separation of the facilities and a low vulnerability to attack. The Clinton Engineer Works was established as
33216-430: The world, had become aware of uranium's possible use in a bomb. In late 1940, fearing that it might be seized by the Germans, he shipped the mine's entire stockpile of ore to a warehouse in New York. For 18 months British research outpaced the American but by mid-1942, it became apparent that the industrial effort required was beyond Britain's already stretched wartime economy. In September 1942, General Leslie Groves
33408-430: The world. The National High Magnetic Field Laboratory in Tallahassee, Florida , is the largest laboratory in the world devoted to the study of magnetism. The University of South Carolina is currently constructing a research campus in downtown Columbia , and the university is the nation's only National Science Foundation -funded Industry/University Cooperative Research Center for Fuel Cells . The region includes
33600-401: The year. This made Tennessee the only Southern state to abolish slavery at the time. Tennessee ratified the Thirteenth Amendment , which outlawed slavery in every state, on April 7, 1865, and the Fourteenth Amendment , which granted citizenship and equal protection under the law to former slaves, on July 18, 1866. Both amendments went into effect after Tennessee's readmission to the union due to
33792-401: The years after the Civil War, including cholera in 1873, which devastated the Nashville area, and yellow fever in 1878, which killed more than one-tenth of Memphis's residents. Reformers worked to modernize Tennessee into a " New South " economy during this time. With the help of Northern investors, Chattanooga became one of the first industrialized cities in the South. Memphis became known as
33984-411: Was a Confederate State that isn't defined as part of the southeast region. Missouri and Kentucky had dual competing Unionist and Confederate state governments in the Confederate government of Missouri and Confederate government of Kentucky , while Maryland and Delaware were neutral southern border states that remained with the Union . West Virginia split from Virginia during 1863, and also served as
34176-411: Was accidentally released into the Emory and Clinch Rivers . The cleanup cost more than $ 1 billion and lasted until 2015. Tennessee is in the Southeastern United States . Culturally, most of the state is considered part of the Upland South , and the eastern third is part of Appalachia . Tennessee covers roughly 42,143 square miles (109,150 km), of which 926 square miles (2,400 km), or 2.2%,
34368-403: Was ahead of the time, five years before the public discovery of nuclear fission and eight years before a working nuclear reactor. When he coined the term neutron inducted chain reaction , he was not sure about the use of isotopes or standard forms of elements. Despite this uncertainty, he correctly theorized uranium and thorium as primary candidates for such a reaction, along with beryllium which
34560-417: Was allowed then or now. (In 1974, the Formerly Utilized Sites Remedial Action Program (FUSRAP) of the Army Corps of Engineers was set up to deal with contaminated sites left over from these operations. ) The Atomic Energy Act also established the United States Congress Joint Committee on Atomic Energy , which had broad legislative and executive oversight jurisdiction over nuclear matters and became one of
34752-416: Was appointed to lead the U.S. project which became known as the Manhattan Project . Two of his first acts were to obtain authorization to assign the highest priority AAA rating on necessary procurements, and to order the purchase of all 1,250 tons of the Shinkolobwe ore. The Tube Alloys project was quickly overtaken by the U.S. effort and after Roosevelt and Churchill signed the Quebec Agreement in 1943, it
34944-435: Was chosen for the new state. The constitution was completed on February 6, which authorized elections for the state's new legislature, the Tennessee General Assembly . The legislature convened on March 28, 1796, and the next day, John Sevier was announced as the state's first governor. Tennessee was admitted to the Union on June 1, 1796, as the 16th state and the first created from federal territory. Tennessee reportedly earned
35136-436: Was clear both to American commentators—and to the Soviets—that it was an attempt primarily to stymie Soviet nuclear efforts. The Soviets vetoed the plan, effectively ending any immediate postwar negotiations on atomic energy, and made overtures towards banning the use of atomic weapons in general. The Soviets had put their full industrial might and manpower into the development of their own atomic weapons. The initial problem for
35328-418: Was erected at rural Oak Ridge, Tennessee , for the large-scale production and purification of the rare isotope, which required considerable investment. At the time, K-25 , one of the Oak Ridge facilities, was the world's largest factory under one roof. The Oak Ridge site employed tens of thousands of people at its peak, most of whom had no idea what they were working on. Although uranium-238 cannot be used for
35520-450: Was intentionally publicized, and highlighted the creationism-evolution controversy among religious groups. In 1926, Congress authorized the establishment of a national park in the Great Smoky Mountains , which was officially established in 1934 and dedicated in 1940. When the Great Depression struck in 1929, much of Tennessee was severely impoverished even by national standards. As part of President Franklin D. Roosevelt 's New Deal ,
35712-463: Was kept but not acted upon, as the Soviet Union was still too busy fighting the war in Europe to devote resources to this new project. In the years immediately after World War II, the issue of who should control atomic weapons became a major international point of contention. Many of the Los Alamos scientists who had built the bomb began to call for "international control of atomic energy," often calling for either control by transnational organizations or
35904-488: Was killed at the Battle of the Alamo . The state's nickname was solidified during the Mexican–American War when President James K. Polk of Tennessee issued a call for 2,800 soldiers from the state, and more than 30,000 volunteered. Between the 1790s and 1820s, additional land cessions were negotiated with the Cherokee, who had established a national government modeled on the U.S. Constitution . In 1818, Jackson and Kentucky governor Isaac Shelby reached an agreement with
36096-566: Was later determined to be unnecessary in practice. Szilard joined Enrico Fermi in developing the first uranium-fuelled nuclear reactor, Chicago Pile-1 , which was activated at the University of Chicago in 1942. In Paris in 1934, Irène and Frédéric Joliot-Curie discovered that artificial radioactivity could be induced in stable elements by bombarding them with alpha particles ; in Italy Enrico Fermi reported similar results when bombarding uranium with neutrons. In December 1938, Otto Hahn and Fritz Strassmann reported that they had detected
36288-507: Was organized into the Southwest Territory on May 26 of that year. The act allowed the territory to petition for statehood once the population reached 60,000. Administration of the territory was divided between the Washington District and the Mero District, the latter of which consisted of the Cumberland Association and was named for Spanish territorial governor Esteban Rodríguez Miró . President George Washington appointed William Blount as territorial governor. The Southwest Territory recorded
36480-514: Was protested by miners forced to compete with the system. An armed uprising in the Cumberland Mountains known as the Coal Creek War in 1891 and 1892 resulted in the state ending convict leasing. Despite New South promoters' efforts, agriculture continued to dominate Tennessee's economy. The majority of freed slaves were forced into sharecropping during the latter 19th century, and many others worked as agricultural wage laborers. In 1897, Tennessee celebrated its statehood centennial one year late with
36672-514: Was relocated and amalgamated into the Manhattan Project. Canada provided uranium and plutonium for the project. Szilard started to acquire high-quality graphite and uranium, which were the necessary materials for building a large-scale chain reaction experiment. This experiment was successfully demonstrated on December 2, 1942, at the University of Chicago. The success of this demonstration and technological breakthrough were partially due to Szilard's new atomic theories, his uranium lattice design, and
36864-436: Was tested in a series of Confederate offensives beginning in the summer of 1862, which culminated in General William Rosecrans 's Army of the Cumberland routing General Braxton Bragg 's Army of Tennessee at Stones River , another one of the war's costliest engagements. The next summer, Rosecrans's Tullahoma campaign forced Bragg's remaining troops in Middle Tennessee to retreat to Chattanooga with little fighting. During
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