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Mexican–American War

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The Mexican Cession ( Spanish : Cesión mexicana ) is the region in the modern-day Western United States that Mexico previously controlled, then ceded to the United States in the Treaty of Guadalupe Hidalgo in 1848 after the Mexican–American War . This region had not been part of the areas east of the Rio Grande that had been claimed by the Republic of Texas , which had been claiming independence since its Texas Revolution of 1836 and subsequent brief war for independence, followed afterwards a decade later by the American annexation and admitted statehood in 1845. It had not specified the southern and western boundary of the new state of Texas with New Mexico consisting of roughly 529,000 square miles (1,370,000 km ), not including any Texas lands, the Mexican Cession was the third-largest acquisition of territory in U.S. history, surpassed only by the 827,000-square-mile (2,140,000 km ) Louisiana Purchase of 1803 and the later 586,000-square-mile (1,520,000 km ) Alaska Purchase from Russia in 1867.

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170-816: Mexican Cession The Mexican–American War , also known in the United States as the Mexican War , and in Mexico as the United States intervention in Mexico , was an invasion of Mexico by the United States Army from 1846 to 1848. It followed the 1845 American annexation of Texas , which Mexico still considered its territory because it refused to recognize the Treaties of Velasco , signed by President Antonio López de Santa Anna after he

340-522: A Baltimore newspaper editor, Frank Key Howard , after he criticized Lincoln in an editorial for ignoring Taney's ruling. In Missouri, an elected convention on secession voted to remain in the Union. When pro-Confederate Governor Claiborne Fox Jackson called out the state militia, it was attacked by federal forces under General Nathaniel Lyon , who chased the governor and rest of the State Guard to

510-525: A blockade of the Confederacy to suffocate the South into surrender. Lincoln adopted parts of the plan but opted for a more active war strategy. In April 1861, Lincoln announced a blockade of all Southern ports; commercial ships could not get insurance, ending regular traffic. The South blundered by embargoing cotton exports before the blockade was fully effective; by the time they reversed this decision, it

680-543: A choice. Indigenous soldiers who volunteered to fight with the Mexican Army were often abandoned and compensated unfairly. By raiding, indigenous populations were also able to acquire horses and properly tame them to move efficiently during battles. Captive-taking methods, especially that of the Comanche tribe, were also used to the advantage of the Mexican Army as captives would end up assisting indigenous populations in

850-434: A course of ultimate extinction. Decades of controversy over slavery were brought to a head when Abraham Lincoln , who opposed slavery's expansion, won the 1860 presidential election . Seven Southern slave states responded to Lincoln's victory by seceding from the United States and forming the Confederacy. The Confederacy seized U.S. forts and other federal assets within their borders. The war began on April 12, 1861, when

1020-705: A draft law in April 1862 for men aged 18–35, with exemptions for overseers, government officials, and clergymen. The U.S. Congress followed in July, authorizing a militia draft within states that could not meet their quota with volunteers. European immigrants joined the Union Army in large numbers, including 177,000 born in Germany and 144,000 in Ireland. About 50,000 Canadians served, around 2,500 of whom were black. When

1190-439: A failure. Although Mexico did not overtly cede any land under the treaty, the redefined border had the effect of transferring Alta California and Santa Fe de Nuevo México to the control of the United States. Equally important, the new border also acknowledged Mexico's loss of Texas, both the core eastern portion and the western claims, neither of which had been formally recognized by Mexico until that time. The U.S. Senate approved

1360-483: A firm hand by Lincoln tamed Seward, who was a staunch Lincoln ally. Lincoln decided holding the fort, which would require reinforcing it, was the only workable option. On April 6, Lincoln informed the Governor of South Carolina that a ship with food but no ammunition would attempt to supply the fort. Historian McPherson describes this win-win approach as "the first sign of the mastery that would mark Lincoln's presidency";

1530-527: A group of 80 soldiers across the disputed territory to the Rio Grande, ignoring Mexican demands to withdraw. Mexican forces interpreted this as an attack and repelled the U.S. forces on April 25, 1846, a move which Polk used to convince the Congress of the United States to declare war. Beyond the disputed area of Texas, U.S. forces quickly occupied the regional capital of Santa Fe de Nuevo México along

1700-451: A large contingent of Irish- and German-born soldiers, nearly all European states and principalities were represented. It is estimated that the U.S. Army further included 1,500 men from British North America, including French Canadians. Although Polk hoped to avoid a protracted war over Texas, the extended conflict stretched regular army resources, necessitating the recruitment of volunteers with short-term enlistments. Some enlistments were for

1870-479: A man until she died in 1915 at the age of 71. The small U.S. Navy of 1861 rapidly expanded to 6,000 officers and 45,000 sailors by 1865, with 671 vessels totaling 510,396 tons. Its mission was to blockade Confederate ports, control the river system, defend against Confederate raiders on the high seas, and be ready for a possible war with the British Royal Navy . The main riverine war was fought in

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2040-449: A military that regularly intervened in politics, the U.S. generally kept its political divisions within the bounds of the institutions of governance. Since Mexico fought the war on its home territory, a traditional support system for troops were women, known as soldaderas . They did not participate in conventional fighting on battlefields, but some soldaderas joined the battle alongside the men. These women were involved in fighting during

2210-451: A patriotic fire under the North. On April 15, Lincoln called on the states to field 75,000 volunteer troops for 90 days; impassioned Union states met the quotas quickly. On May 3, 1861, Lincoln called for an additional 42,000 volunteers for three years. Shortly after this, Virginia , Tennessee , Arkansas , and North Carolina seceded and joined the Confederacy. To reward Virginia,

2380-461: A period of months, sometimes just weeks, or even days. Just before the outbreak of the war, liberal General José Joaquín de Herrera was president (December 1844 – December 1845) and willing to engage in talks so long as he did not appear to be caving to the U.S., but he was accused by many Mexican factions of selling out his country ( vendepatria ) for considering it. He was overthrown by Conservative Mariano Paredes (December 1845 – July 1846), who left

2550-519: A policy of colonization to more effectively control the territory. After independence, the Mexican government implemented the policy, granting Moses Austin , a banker from Missouri, a large tract of land in Texas. Austin died before he could bring his plan of recruiting American settlers for the land to fruition, but his son, Stephen F. Austin , brought over 300 American families into Texas. This started

2720-624: A republic in 1824. This government was characterized by instability, and it was ill-prepared for a major international conflict when war broke out with the U.S. in 1846. Mexico had successfully resisted Spanish attempts to reconquer its former colony in the 1820s and resisted the French in the so-called Pastry War of 1838 but the secessionists' success in Texas and the Yucatán against the centralist government of Mexico showed its political weakness as

2890-421: A republic, but a third challenge faced the nation: maintaining a republic based on the people's vote, in the face of an attempt to destroy it. Lincoln's election provoked South Carolina 's legislature to call a state convention to consider secession. South Carolina had done more than any other state to advance the notion that a state had the right to nullify federal laws and even secede. On December 20, 1860,

3060-663: A significant advantage over their Mexican counterparts, such as the Springfield 1841 rifle of the Mississippi Rifles and the Colt Paterson revolver of the Texas Rangers . In the later stages of the war, the U.S. Mounted Rifles were issued Colt Walker revolvers, of which the U.S. Army had ordered 1,000 in 1846. Most significantly, throughout the war, the superiority of the U.S. artillery often carried

3230-412: A slave state, upsetting the balance of power between Northern free states and Southern slave states. In the 1844 United States presidential election , Democrat James K. Polk was elected on a platform of expanding U.S. territory to Oregon , California (also a Mexican territory), and Texas by any means, with the 1845 annexation of Texas furthering that goal. However, the boundary between Texas and Mexico

3400-610: A sovereign nation, deepened those sectional divisions. Polk had narrowly won the popular vote in the 1844 presidential election and decisively won the Electoral College, but with the annexation of Texas in 1845 and the outbreak of war in 1846, Polk's Democrats lost the House of Representatives to the Whig Party, which opposed the war. Unlike Mexico, which had weak formal state institutions, chaotic changes in government, and

3570-642: A sustained effort to acquire northern Mexican territory, with no success. Historian Peter Guardino states that in the war "the greatest advantage the United States had was its prosperity." With the Industrial Revolution across the Atlantic increasing the demand for cotton for textile factories, there was a large external market for cotton produced by enslaved African-American labor in the southern states. This demand helped fuel expansion into northern Mexico. Although there were political conflicts in

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3740-499: A tripartite pact to settle the Oregon boundary dispute and provide for the cession of the port of San Francisco from Mexico. Lord Aberdeen declined to participate but said Britain had no objection to U.S. territorial acquisition there. The British minister in Mexico, Richard Pakenham , wrote in 1841 to Lord Palmerston urging "to establish an English population in the magnificent Territory of Upper California", saying that "no part of

3910-433: A year, but others were for 3 or 6 months. The best volunteers signed up for a year's service in the summer of 1846, with their enlistments expiring just when General Winfield Scott 's campaign was poised to capture Mexico City. Many did not re-enlist, deciding that they would rather return home than place themselves in harm's way of disease, threat of death or injury on the battlefield, or in guerrilla warfare. Their patriotism

4080-490: The 1860 presidential election . Southern leaders feared Lincoln would stop slavery's expansion and put it on a course toward extinction. His victory triggered declarations of secession by seven slave states of the Deep South , all of whose riverfront or coastal economies were based on cotton that was cultivated by slave labor. Lincoln was not inaugurated until March 4, 1861, giving the South time to prepare for war during

4250-536: The Adams-Onís Treaty of 1818. U.S. negotiator John Quincy Adams wanted clear possession of East Florida and establishment of U.S. claims above the 42nd parallel, while Spain sought to limit U.S. expansion into what is now the American Southwest . The U.S. sought to purchase territory from Mexico, starting in 1825, in order to settle some of these issues. U.S. President Andrew Jackson made

4420-700: The Adams–Onís Treaty of arbitration and border settlement signed two decades before by the United States and the Kingdom of Spain in 1821 after a long dispute and was further ratified by the successor state of an independent republic in Mexico in 1831 in the Treaty of Limits between them then. The eastern boundary of the Mexican Cession was the former old Texas Republic claim of additional western lands from

4590-588: The American Civil War . Many officers who had trained at West Point gained experience in the war and later played prominent leadership roles during the Civil War. In Mexico, the war worsened domestic political turmoil and led to a loss of national prestige, as it suffered large losses of life in both its military and civilian population, had its financial foundations undermined, and lost more than half of its territory. Mexico obtained independence from

4760-541: The Battle of Appomattox Court House , setting in motion the end of the war . Lincoln led the nation through that victory but was shot by an assassin on April 14. By the end of the war, much of the South's infrastructure was destroyed. The Confederacy collapsed, slavery was abolished, and four million enslaved black people were freed. The war-torn nation then entered the Reconstruction era in an attempt to rebuild

4930-601: The California Battalion following the outbreak of the Bear Flag Revolt in Sonoma. In November 1845, Polk sent John Slidell , a secret representative, to Mexico City with an offer to the Mexican government of $ 25 million for the Rio Grande border in Texas and Mexico's provinces of Alta California and Santa Fe de Nuevo México. U.S. expansionists wanted California to thwart any British interests in

5100-637: The Dred Scott decision was proof the Southern states had no reason to secede and that the Union "was intended to be perpetual". He added, however, that "The power by force of arms to compel a State to remain in the Union" was not among the "enumerated powers granted to Congress". A quarter of the US army—the Texas garrison—was surrendered in February to state forces by its general, David E. Twiggs , who joined

5270-618: The Emancipation Proclamation went into effect in January 1863, ex-slaves were energetically recruited to meet state quotas. States and local communities offered higher cash bonuses for white volunteers. Congress tightened the draft law in March 1863. Men selected in the draft could provide substitutes or, until mid-1864, pay commutation money. Many eligibles pooled their money to cover the cost of anyone drafted. Families used

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5440-513: The Mexican War of Independence from the Kingdom of Spain up through to 1846 when U.S. military forces sent by 11th President James K. Polk (1795-1849, served 1845-1849) in a boundary dispute invaded the northeastern corner of Mexico between the Rio Bravo and the Rio Grande by land, plus another American naval landing on the nearby Gulf of Mexico western coast, plus seized control further to

5610-475: The Spanish Empire with the Treaty of Córdoba in 1821 after a decade of conflict between the royal army and insurgents for independence, with no foreign intervention. The conflict ruined the silver-mining districts of Zacatecas and Guanajuato . Mexico began as a sovereign nation with its future financial stability from its main export destroyed. Mexico briefly experimented with monarchy , but became

5780-515: The United States between the Union ("the North") and the Confederacy ("the South"), which was formed in 1861 by states that had seceded from the Union. The central conflict leading to war was a dispute over whether slavery should be permitted to expand into the western territories, leading to more slave states , or be prohibited from doing so, which many believed would place slavery on

5950-592: The Virginia to prevent its capture, while the Union built many copies of the Monitor . The Confederacy's efforts to obtain warships from Great Britain failed, as Britain had no interest in selling warships to a nation at war with a stronger enemy and feared souring relations with the U.S. By early 1861, General Winfield Scott had devised the Anaconda Plan to win the war with minimal bloodshed, calling for

6120-522: The Western theater , the Union made permanent gains—though in the Eastern theater the conflict was inconclusive. The abolition of slavery became a Union war goal on January 1, 1863, when Lincoln issued the Emancipation Proclamation , which declared all slaves in rebel states to be free, applying to more than 3.5 million of the 4 million enslaved people in the country. To the west, the Union first destroyed

6290-469: The electrical telegraph , steamships, the ironclad warship , and mass-produced weapons were widely used. The war left an estimated 698,000 soldiers dead, along with an undetermined number of civilian casualties, making the Civil War the deadliest military conflict in American history. The technology and brutality of the Civil War foreshadowed the coming World Wars . The origins of the war were rooted in

6460-406: The 168,649 men procured for the Union through the draft, 117,986 were substitutes, leaving only 50,663 who were conscripted. In the North and South, draft laws were highly unpopular. In the North, some 120,000 men evaded conscription, many fleeing to Canada, and another 280,000 soldiers deserted during the war. At least 100,000 Southerners deserted, about 10 percent of the total. Southern desertion

6630-545: The Atlantic and Pacific oceans. Insurance rates soared, and the American flag virtually disappeared from international waters, though reflagging ships with European flags allowed them to continue operating unmolested. After the war, the U.S. government demanded Britain compensate it for the damage caused by blockade runners and raiders outfitted in British ports. Britain paid the U.S. $ 15 million in 1871, but only for commerce raiding. Dinçaslan argues that another outcome of

6800-566: The Bahamas in exchange for high-priced cotton. Many were lightweight and designed for speed, only carrying small amounts of cotton back to England. When the Union Navy seized a blockade runner, the ship and cargo were condemned as a prize of war and sold, with proceeds given to the Navy sailors; the captured crewmen, mostly British, were released. The Southern economy nearly collapsed during

6970-400: The British response to the U.S. was toned down, helping avert war. In 1862, the British government considered mediating between the Union and Confederacy, though such an offer would have risked war with the U.S. British Prime Minister Lord Palmerston reportedly read Uncle Tom's Cabin three times when deciding what his decision would be. The Union victory at the Battle of Antietam caused

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7140-569: The British to delay this decision. The Emancipation Proclamation increased the political liability of supporting the Confederacy. Realizing that Washington could not intervene in Mexico as long as the Confederacy controlled Texas, France invaded Mexico in 1861 and installed the Habsburg Austrian archduke Maximilian I as emperor. Washington repeatedly protested France's violation of the Monroe Doctrine . Despite sympathy for

7310-575: The Commonwealth, which at its greatest extent was over half the state, and it went into exile after October 1862. After Virginia's secession, a Unionist government in Wheeling asked 48 counties to vote on an ordinance to create a new state in October 1861. A voter turnout of 34% approved the statehood bill (96% approving). Twenty-four secessionist counties were included in the new state, and

7480-486: The Confederacy bombarded Fort Sumter in South Carolina . A wave of enthusiasm for war swept over the North and South, as military recruitment soared. Four more Southern states seceded after the war began and, led by its president, Jefferson Davis , the Confederacy asserted control over a third of the U.S. population in eleven states. Four years of intense combat, mostly in the South, ensued. During 1861–1862 in

7650-400: The Confederacy refused to exchange black prisoners. After that, about 56,000 of the 409,000 POWs died in prisons, accounting for 10 percent of the conflict's fatalities. Historian Elizabeth D. Leonard writes that between 500 and 1,000 women enlisted as soldiers on both sides, disguised as men. Women also served as spies, resistance activists, nurses, and hospital personnel. Women served on

7820-539: The Confederacy's river navy by the summer of 1862, then much of its western armies, and seized New Orleans . The successful 1863 Union siege of Vicksburg split the Confederacy in two at the Mississippi River , while Confederate General Robert E. Lee 's incursion north failed at the Battle of Gettysburg . Western successes led to General Ulysses S. Grant 's command of all Union armies in 1864. Inflicting an ever-tightening naval blockade of Confederate ports,

7990-518: The Confederacy, France's seizure of Mexico ultimately deterred it from war with the Union. Confederate offers late in the war to end slavery in return for diplomatic recognition were not seriously considered by London or Paris. After 1863, the Polish revolt against Russia further distracted the European powers and ensured they remained neutral. Russia supported the Union, largely because it believed

8160-706: The Confederacy. As Southerners resigned their Senate and House seats, Republicans could pass projects that had been blocked. These included the Morrill Tariff , land grant colleges, a Homestead Act , a transcontinental railroad, the National Bank Act , authorization of United States Notes by the Legal Tender Act of 1862 , and the end of slavery in the District of Columbia . The Revenue Act of 1861 introduced income tax to help finance

8330-704: The Confederate capital was moved to Richmond . Maryland , Delaware , Missouri , West Virginia and Kentucky were slave states whose people had divided loyalties to Northern and Southern businesses and family members. Some men enlisted in the Union Army and others in the Confederate Army. West Virginia separated from Virginia and was admitted to the Union on June 20, 1863, though half its counties were secessionist. Maryland's territory surrounded Washington, D.C. , and could cut it off from

8500-542: The District of Columbia by seizing prominent figures, including arresting one-third of the members of the Maryland General Assembly on the day it reconvened. All were held without trial, with Lincoln ignoring a ruling on June 1, 1861, by Supreme Court Chief Justice Roger Taney , not speaking for the Court, that only Congress could suspend habeas corpus ( Ex parte Merryman ). Federal troops imprisoned

8670-555: The Louisiana volunteers were there, a lawless drunken rabble. They had driven away the inhabitants, taken possession of their houses, and were emulating each other in making beasts of themselves." John L. O'Sullivan , a vocal proponent of Manifest Destiny, later recalled "The regulars regarded the volunteers with importance and contempt ... [The volunteers] robbed Mexicans of their cattle and corn, stole their fences for firewood, got drunk, and killed several inoffensive inhabitants of

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8840-474: The Natives. In 1829, because of the large influx of American immigrants, the non-Hispanic outnumbered native Spanish speakers in Texas. President Vicente Guerrero , a hero of Mexican independence, moved to gain more control over Texas and its influx of non-Hispanic colonists from the southern U.S. and discourage further immigration by abolishing slavery in Mexico. The Mexican government also decided to reinstate

9010-420: The North, where anti-slavery sentiment had grown, and for the South, where the fear of slavery's abolition had grown. Another factor leading to secession and the formation of the Confederacy was the development of white Southern nationalism in the preceding decades. The primary reason for the North to reject secession was to preserve the Union, a cause based on American nationalism . Background factors in

9180-658: The North. It had anti-Lincoln officials who tolerated anti-army rioting in Baltimore and the burning of bridges, both aimed at hindering the passage of troops to the South. Maryland's legislature voted overwhelmingly to stay in the Union, but rejected hostilities with its southern neighbors, voting to close Maryland's rail lines to prevent their use for war. Lincoln responded by establishing martial law and unilaterally suspending habeas corpus in Maryland, along with sending in militia units. Lincoln took control of Maryland and

9350-541: The Nueces River, ready to take by force the disputed land. At the same time, President Polk wrote to the American consul in the Mexican territory of Alta California, disclaiming American ambitions in California but offering to support independence from Mexico or voluntary accession to the United States, and warning that the United States would oppose any European attempts to take over. To end another war scare with

9520-546: The Regular Army officers looked down on the volunteers, whose training was poor and whose behavior was undisciplined. (see below) On the West Coast, the U.S. Navy fielded a battalion of sailors, in an attempt to recapture Los Angeles . Although the U.S. Army and Navy were not large at the outbreak of the war, the officers were generally well trained and the numbers of enlisted men fairly large compared to Mexico's. At

9690-399: The Rio Grande boundary of Texas was omitted from the U.S. Congress's annexation resolution to help secure passage after the annexation treaty failed in the Senate. President Polk claimed the Rio Grande boundary, and when Mexico sent forces over the Rio Grande, this provoked a dispute. In July 1845, Polk sent General Zachary Taylor to Texas, and by October, Taylor commanded 3,500 Americans on

9860-429: The Rio Grande on land that had been claimed by the new Republic of Texas since 1836, but never actually controlled or even approached (aside from the tragic Texan Santa Fe Expedition ). Mexico controlled the territory later known as the Mexican Cession, with considerable local autonomy punctuated by several revolts and few troops sent from central Mexico and the capital of Mexico City , in the period from 1821–1822 after

10030-489: The Rio Grande. Eventually the Compromise of 1850 preserved the Union, but only for another decade. Proposals included: It quickly became apparent that the Mexican Cession did not include a feasible route for a transcontinental railroad connecting to a southern port. The topography of the New Mexico Territory included mountains that naturally directed any railroad extending from the southern Pacific coast northward, to Kansas City, St. Louis, or Chicago. Southerners, anxious for

10200-408: The South's post-war recovery. Cotton diplomacy proved a failure as Europe had a surplus of cotton, while the 1860–62 crop failures in Europe made the North's grain exports critically important. It also helped turn European opinion against the Confederacy. It was said that "King Corn was more powerful than King Cotton," as U.S. grain went from a quarter to almost half of British imports. Meanwhile,

10370-416: The South. The Confederacy turned to foreign sources, connecting with financiers and companies like S. Isaac, Campbell & Company and the London Armoury Company in Britain, becoming the Confederacy's main source of arms. To transport arms safely to the Confederacy, British investors built small, fast, steam-driven blockade runners that traded arms and supplies from Britain, through Bermuda, Cuba, and

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10540-580: The Texians in the Battle of the Alamo , he was defeated by the Texian Army commanded by General Sam Houston and was captured at the Battle of San Jacinto . In exchange for his life Santa Anna signed a treaty with Texas President David Burnet ending the war and recognizing Texian independence. The treaty was not ratified by the Mexican Congress as it had been signed by a captive under duress. Although Mexico refused to recognize Texian independence, Texas consolidated its status as an independent republic and received official recognition from Britain, France, and

10710-413: The Treaties of Velasco made after Texans captured General Santa Ana after the Battle of San Jacinto, the southern border of Texas was placed at the "Rio Grande del Norte." The Texans claimed this placed the southern border at the modern Rio Grande . The Mexican government disputed this placement on two grounds: first, it rejected the idea of Texas independence; and second, it claimed that the Rio Grande in

10880-413: The Treaty of Guadalupe Hidalgo. For only 15 years, from 1821 (when Mexican independence was secured) to the Texan Revolt in 1836, the Mexican Cession (excluding Texas) formed approximately 42% of the country of Mexico. Prior to that, it had been a part of the Spanish colony of New Spain for three centuries. Soon after the war started and long before negotiation of the new Mexico–United States border ,

11050-399: The U.S. and Britain over the Trent affair , which began when U.S. Navy personnel boarded the British ship Trent and seized two Confederate diplomats. However, London and Washington smoothed this over after Lincoln released the two men. Prince Albert left his deathbed to issue diplomatic instructions to Lord Lyons during the Trent affair. His request was honored, and, as a result,

11220-402: The U.S. to settle debts, saying: "As to Texas, I regard it as of very little value compared with California, the richest, the most beautiful, and the healthiest country in the world ... with the acquisition of Upper California we should have the same ascendency on the Pacific ... France and England both have had their eyes upon it." U.S. President John Tyler 's administration suggested

11390-567: The U.S., they were largely contained by the framework of the constitution and did not result in revolution or rebellion by 1846, but rather by sectional political conflicts. Northerners in the U.S. sought to develop the country's existing resources and expand the industrial sector without expanding the nation's territory. The existing balance of sectional interests would be disrupted by the expansion of slavery into new territory. The Democratic Party , to which President Polk belonged, in particular strongly supported expansion. Neither colonial Mexico nor

11560-471: The Union Army or pro-Union guerrilla groups. Although they came from all classes, most Southern Unionists differed socially, culturally, and economically from their region’s dominant prewar, slave-owning planter class. At the war's start, a parole system operated, under which captives agreed not to fight until exchanged. They were held in camps run by their army, paid, but not allowed to perform any military duties. The system of exchanges collapsed in 1863 when

11730-401: The Union blockade. The Confederacy purchased warships from commercial shipbuilders in Britain, with the most famous being the CSS  Alabama , which caused considerable damage and led to serious postwar disputes . However, public opinion against slavery in Britain created a political liability for politicians, where the anti-slavery movement was powerful. War loomed in late 1861 between

11900-413: The Union hospital ship Red Rover and nursed Union and Confederate troops at field hospitals. Mary Edwards Walker , the only woman ever to receive the Medal of Honor , served in the Union Army and was given the medal for treating the wounded during the war. One woman, Jennie Hodgers, fought for the Union under the name Albert D. J. Cashier. After she returned to civilian life, she continued to live as

12070-435: The Union marshaled resources and manpower to attack the Confederacy from all directions. This led to the fall of Atlanta in 1864 to Union General William Tecumseh Sherman , followed by his March to the Sea . The last significant battles raged around the ten-month Siege of Petersburg , gateway to the Confederate capital of Richmond . The Confederates abandoned Richmond, and on April 9, 1865, Lee surrendered to Grant following

12240-492: The Union would win if it could resupply and hold the fort, and the South would be the aggressor if it opened fire on an unarmed ship supplying starving men. An April 9 Confederate cabinet meeting resulted in Davis ordering General P. G. T. Beauregard to take the fort before supplies reached it. At 4:30 am on April 12, Confederate forces fired the first of 4,000 shells at the fort; it fell the next day. The loss of Fort Sumter lit

12410-486: The Union, this was never likely, so they sought to bring them in as mediators. The Union worked to block this and threatened war if any country recognized the Confederacy. In 1861, Southerners voluntarily embargoed cotton shipments, hoping to start an economic depression in Europe that would force Britain to enter the war, but this failed. Worse, Europe turned to Egypt and India for cotton, which they found superior, hindering

12580-483: The Union-held Fort Sumter. Fort Sumter is located in the harbor of Charleston , South Carolina. Its status had been contentious for months. Outgoing President Buchanan had dithered in reinforcing its garrison, commanded by Major Robert Anderson . Anderson took matters into his own hands and on December 26, 1860, under the cover of darkness, sailed the garrison from the poorly placed Fort Moultrie to

12750-702: The Union. A February peace conference met in Washington, proposing a solution similar the Compromise; it was rejected by Congress. The Republicans proposed the Corwin Amendment , an alternative, not to interfere with slavery where it existed, but the South regarded it as insufficient. The remaining eight slave states rejected pleas to join the Confederacy, following a no-vote in Virginia's First Secessionist Convention on April 4. On March 4, Lincoln

12920-758: The United Kingdom over the Oregon Country , Polk signed the Oregon Treaty dividing the territory, angering Northern Democrats who felt he was prioritizing Southern expansion over Northern expansion. In the winter of 1845–46, the federally commissioned explorer John C. Frémont and a group of armed men appeared in Alta California. After telling both the Mexican governor and the American Consul Thomas O. Larkin that he

13090-424: The United States, which all advised Mexico not to try to reconquer the new nation. Most Texians wanted to join the United States, but the annexation of Texas was contentious in the U.S. Congress, where Whigs and Abolitionists were largely opposed. In 1845, Texas agreed to the offer of annexation by the U.S. Congress and became the 28th state on December 29, 1845, which set the stage for the conflict with Mexico. By

13260-577: The West, where major rivers gave access to the Confederate heartland. The U.S. Navy eventually controlled the Red, Tennessee, Cumberland, Mississippi, and Ohio rivers. In the East, the Navy shelled Confederate forts and supported coastal army operations. The Civil War occurred during the early stages of the industrial revolution, leading to naval innovations, notably the ironclad warship . The Confederacy, recognizing

13430-579: The Western territories destined to become states. Initially Congress had admitted new states into the Union in pairs, one slave and one free . This had kept a sectional balance in the Senate but not in the House of Representatives , as free states outstripped slave states in numbers of eligible voters. Thus, at mid-19th century, the free-versus-slave status of the new territories was a critical issue, both for

13600-457: The World offering greater natural advantages for the establishment of an English colony ... by all means desirable ... that California, once ceasing to belong to Mexico, should not fall into the hands of any power but England ... there is some reason to believe that daring and adventurous speculators in the United States have already turned their thoughts in this direction." By the time

13770-629: The area and to gain a port on the Pacific Ocean. Polk authorized Slidell to forgive the $ 3 million owed to U.S. citizens for damages caused by the Mexican War of Independence and pay another $ 25 to $ 30 million for the two territories. Mexico was neither inclined nor able to negotiate. In 1846 alone, the presidency changed hands four times, the war ministry six times, and the finance ministry sixteen times. Despite that, Mexican public opinion and all political factions agreed that selling

13940-484: The army did their best to train the rough men who volunteered, but they could do little to inspire them with patriotism for the glorious country they were honored to serve." According to the leading Mexican conservative politician, Lucas Alamán , the "money spent on arming Mexican troops merely enabled them to fight each other and 'give the illusion' that the country possessed an army for its defense." However, an officer criticized Santa Anna's training of troops, "The cavalry

14110-438: The battles of Palo Alto and Resaca-de-la-Palma, General Taylor had a small army, but it was composed exclusively of regular troops, under the best of drill and discipline. Every officer, from the highest to the lowest, was educated in his profession, not at West Point necessarily, but in the camp, in garrison, and many of them in wars with Natives. The rank and file were probably inferior, as material out of which to make an army, to

14280-468: The beginning of the war, Mexican forces were divided between the permanent forces ( permanentes ) and the active militiamen ( activos ). The permanent forces consisted of 12 regiments of infantry (of two battalions each), three brigades of artillery, eight regiments of cavalry, one separate squadron and a brigade of dragoons. The militia amounted to nine infantry and six cavalry regiments. In the northern territories, presidial companies ( presidiales ) protected

14450-549: The beginning of the war, the U.S. Army had eight regiments of infantry (three battalions each), four artillery regiments and three mounted regiments (two dragoons, one of mounted rifles). These regiments were supplemented by 10 new regiments (nine of infantry and one of cavalry) raised for one year of service by the act of Congress from February 11, 1847. A large portion of this fighting force consisted of recent immigrants. According to Tyler V. Johnson, foreign-born men amounted to 47 percent of General Taylor's total forces. In addition to

14620-521: The blockade was the rise of oil as a prominent commodity. The declining whale oil industry took a blow as many old whaling ships were used in blockade efforts, such as the Stone Fleet , and Confederate raiders harassed Union whalers. Oil products, especially kerosene, began replacing whale oil in lamps, increasing oil's importance long before it became fuel for combustion engines. Although the Confederacy hoped Britain and France would join them against

14790-522: The business such a railroad would bring (and hoping to establish a slave state beachhead on the Pacific coast), agitated for the acquisition of railroad-friendly land at the expense of Mexico, thus bringing about the Gadsden Purchase of 1853. American Civil War The American Civil War (April 12, 1861 – May 26, 1865; also known by other names ) was a civil war in

14960-481: The capital to sort out the political mess. Santa Anna briefly held the presidency again, from March 21, 1847 – April 2, 1847. His troops were deprived of support that would allow them to continue the fight. The conservatives demanded the removal of Gómez Farías, and this was accomplished by abolishing the office of vice president. Santa Anna returned to the field, replaced in the presidency by Pedro María de Anaya (April 2 – May 20, 1847). Santa Anna returned to

15130-532: The casualties, monetary cost, and heavy-handedness. The question of how to treat the new acquisitions intensified the debate over slavery in the United States. Although the Wilmot Proviso that explicitly forbade the extension of slavery into conquered Mexican territory was not adopted by Congress, debates about it heightened sectional tensions. Some scholars see the Mexican–American War as leading to

15300-508: The convention unanimously voted to secede and adopted a secession declaration . It argued for states' rights for slave owners but complained about states' rights in the North in the form of resistance to the federal Fugitive Slave Act, claiming that Northern states were not fulfilling their obligations to assist in the return of fugitive slaves. The "cotton states" of Mississippi , Florida , Alabama , Georgia , Louisiana , and Texas followed suit, seceding in January and February 1861. Among

15470-447: The country to acquire livestock for their own use and to supply an expanding market in Texas and the U.S. The northern area of Mexico was sparsely settled because of its challenging climate and topography. Mostly high desert with scarce rainfall, it supported little sedentary agriculture during the pre-Hispanic and colonial periods. After independence, Mexico became preoccupied with internal struggles that sometimes verged on civil war, and

15640-489: The country, bring the former Confederate states back into the United States, and grant civil rights to freed slaves. The war is one of the most extensively studied and written about episodes in U.S. history . It remains the subject of cultural and historiographical debate . Of continuing interest is the fading myth of the Lost Cause of the Confederacy . The war was among the first to use industrial warfare . Railroads,

15810-477: The crisis was Secretary of State William H. Seward , who had been Lincoln's rival for the Republican nomination . Embittered by his defeat, Seward agreed to support Lincoln's candidacy only after he was guaranteed the executive office then considered the second most powerful. In the early stages of Lincoln's presidency Seward held little regard for him, due to his perceived inexperience. Seward viewed himself as

15980-454: The day. In his 1885 memoirs, former U.S. President Ulysses Grant , a veteran of the Mexican war, attributed Mexico's defeat to the poor quality of their army, writing: "The Mexican army of that day was hardly an organization. The private soldier was picked from the lower class of the inhabitants when wanted; his consent was not asked; he was poorly clothed, worse fed, and seldom paid. He was turned adrift when no longer wanted. The officers of

16150-657: The de facto head of government, the " prime minister " behind the throne. Seward attempted to engage in unauthorized and indirect negotiations that failed. Lincoln was determined to hold all remaining Union-occupied forts in the Confederacy: Fort Monroe in Virginia, Fort Pickens , Fort Jefferson , and Fort Taylor in Florida, and Fort Sumter in South Carolina. The American Civil War began on April 12, 1861, when Confederate forces opened fire on

16320-423: The defense of Mexico City and Monterrey. Some women such as Doña Jesús Dosamantes and María Josefa Zozaya would be remembered as heroes. On the other hand, some Mexican women were seen as "angels" as they provided aid and comfort to the injured men on both sides. Although soldaderas were able to prove the abilities Mexican women had outside of the private sphere, Mexican women on the home front still contributed to

16490-497: The depredations of Micheltorena's army. Former Governor Alvarado organized a revolt in 1845, which culminated in the Battle of Providencia in Cahuenga Pass near Los Angeles. As a result of the actions of pioneer California rancher John Marsh , Micheltorena's forces were defeated. In 1800, Spain's colonial province of Texas (Tejas) had few inhabitants, with only about 7,000 non-native settlers. The Spanish crown developed

16660-529: The desire of the Southern states to preserve the institution of slavery . Historians in the 21st century overwhelmingly agree on the centrality of slavery in the conflict. They disagree on which aspects (ideological, economic, political, or social) were most important, and on the North 's reasons for refusing to allow the Southern states to secede. The pseudo-historical Lost Cause ideology denies that slavery

16830-493: The ensuing guerrilla war engaged about 40,000 federal troops for much of the war. Congress admitted West Virginia to the Union on June 20, 1863. West Virginians provided about 20,000 soldiers to each side in the war. A Unionist secession attempt occurred in East Tennessee , but was suppressed by the Confederacy, which arrested over 3,000 men suspected of loyalty to the Union; they were held without trial. The Civil War

17000-430: The essential role of cotton in the European economy. The European aristocracy was "absolutely gleeful in pronouncing the American debacle as proof that the entire experiment in popular government had failed. European government leaders welcomed the fragmentation of the ascendant American Republic." However, a European public with liberal sensibilities remained, which the U.S. sought to appeal to by building connections with

17170-592: The far west of California on the Pacific Ocean coast with the landing of a U.S. naval squadron and two land expeditions across the continent from the east in Missouri and into the Mexican province of New Mexico at the outbreak of the Mexican–American War in 1846 The northern boundary of the territories ceded by Mexican to the U.S.A. was at the 42nd parallel north of latitude was originally set by

17340-577: The federal system, replacing it with a unitary central government that removed power from the states. Leaving politics to those in Mexico City, General Santa Anna led the Mexican army to quash the semi-independence of Texas. He had done that in Coahuila (in 1824, Mexico had merged Texas and Coahuila into the enormous state of Coahuila y Tejas ). Austin called Texians to arms and they declared independence from Mexico in 1836. After Santa Anna defeated

17510-485: The government changed hands multiple times. The Mexican military and the Catholic Church in Mexico , both privileged institutions with conservative political views, were stronger politically than the Mexican state. The United States' 1803 Louisiana Purchase resulted in an undefined border between Spanish colonial territories and the U.S. Some of the boundary issues between the U.S. and Spain were resolved with

17680-439: The homefront economy could no longer supply. Surdam contends that the blockade was a powerful weapon that eventually ruined the Southern economy, costing few lives in combat. The Confederate cotton crop became nearly useless, cutting off the Confederacy's primary income source. Critical imports were scarce, and coastal trade largely ended as well. The blockade's success was not measured by the few ships that slipped through but by

17850-554: The international press. By 1861, Union diplomats like Carl Schurz realized emphasizing the war against slavery was the Union's most effective moral asset in swaying European public opinion. Seward was concerned an overly radical case for reunification would distress European merchants with cotton interests; even so, he supported a widespread campaign of public diplomacy. U.S. minister to Britain Charles Francis Adams proved adept and convinced Britain not to challenge

18020-468: The letter reached London, though, Sir Robert Peel 's Tory government, with its Little England policy, had come to power and rejected the proposal as expensive and a potential source of conflict. Pío Pico , the last governor of Alta California, advocated that California achieve independence from Mexico and become a British protectorate . In 1842, Mexico forcibly replaced California Governor Juan Bautista Alvarado with Manuel Micheltorena . Micheltorena

18190-483: The lower grades were but little superior to the men. With all this I have seen as brave stands made by some of these men as I have ever seen made by soldiers. Now Mexico has a standing army larger than the United States. They have a military school modeled after West Point. Their officers are educated and, no doubt, very brave. The Mexican war of 1846–48 would be an impossibility in this generation." There were significant political divisions in Mexico which seriously impeded

18360-607: The movement to abolish slavery and its influence over the North. Southern states believed that the Fugitive Slave Clause made slaveholding a constitutional right. These states agreed to form a new federal government, the Confederate States of America , on February 4, 1861. They took control of federal forts and other properties within their boundaries, with little resistance from outgoing President James Buchanan , whose term ended on March 4. Buchanan said

18530-476: The need to counter the Union's naval superiority, built or converted over 130 vessels, including 26 ironclads. Despite these efforts, Confederate ships were largely unsuccessful against Union ironclads. The Union Navy used timberclads, tinclads, and armored gunboats. Shipyards in Cairo, Illinois, and St. Louis built or modified steamboats . The Confederacy experimented with the submarine CSS  Hunley , which

18700-418: The new Confederacy sent delegates to Washington to negotiate a peace treaty. Lincoln rejected negotiations, because he claimed that the Confederacy was not a legitimate government and to make a treaty with it would recognize it as such. Lincoln instead attempted to negotiate directly with the governors of seceded states, whose administrations he continued to recognize. Complicating Lincoln's attempts to defuse

18870-445: The newly sovereign Mexican state effectively controlled Mexico's far north and west. Mexico's military and diplomatic capabilities declined after it attained independence from Spain in 1821 and left the northern half of the country vulnerable to attacks by Comanche , Apache , and Navajo Native Americans. The Comanche, in particular, took advantage of the weakness of the Mexican state to undertake large-scale raids hundreds of miles into

19040-417: The ordinances of secession, those of Texas, Alabama, and Virginia mentioned the plight of the "slaveholding states" at the hands of Northern abolitionists. The rest made no mention of slavery but were brief announcements by the legislatures of the dissolution of ties to the Union. However, at least four—South Carolina, Mississippi, Georgia, and Texas —provided detailed reasons for their secession, all blaming

19210-670: The outbreak of the war, New Mexico was economically dependent on trade with the United States via the eastern branch of the Santa Fe Trail . The Mexican government's policy of allowing the settlement of U.S. citizens in its province of Tejas was aimed at expanding control into Comanche lands, the Comancheria . However, rather than settling in the dangerous central and western parts of the province, Anglos preferred to settle in East Texas with its rich farmland contiguous with

19380-405: The physical damage of the war and assumed $ 3.25 million of debt already owed by the Mexican government to U.S. citizens. Mexico relinquished its claims on Texas and accepted the Rio Grande as its northern border with the United States. The victory and territorial expansion Polk envisioned inspired patriotism among some sections of the United States, but the war and treaty drew fierce criticism for

19550-466: The presidency on May 20, 1847, when Anaya left to fight the invasion, serving until September 15, 1847. Preferring the battlefield to administration, Santa Anna left office again, leaving the office to Manuel de la Peña y Peña (September 16 – November 13, 1847). With U.S. forces occupying the Mexican capital and much of the heartland, negotiating a peace treaty was an exigent matter, and Peña y Peña left office to do that. Pedro María Anaya returned to

19720-518: The presidency on November 13, 1847 – January 8, 1848. Anaya refused to sign any treaty that ceded land to the U.S., despite the situation on the ground with Americans occupying the capital. Peña y Peña resumed the presidency January 8, 1848 – June 3, 1848, during which time the Treaty of Guadalupe Hidalgo was signed, bringing the war to an end. Polk had pledged to seek expanded territory in Oregon and Texas, as part of his campaign in 1844 , but

19890-460: The presidency to fight the invading U.S. Army and was replaced by his vice president Nicolás Bravo (July 28, 1846 – August 4, 1846). The conservative Bravo was overthrown by federalist liberals who re-established the federal Constitution of 1824 . José Mariano Salas (August 6, 1846 – December 23, 1846) served as president and held elections under the restored federalist system. General Antonio López de Santa Anna won those elections, but as

20060-460: The property tax and increase tariffs on shipped American goods. The settlers and many Mexican businessmen in the region rejected the demands, which led to Mexico closing Texas to additional immigration, which continued from the United States into Texas illegally. In 1834, Mexican conservatives seized the political initiative, and General Antonio López de Santa Anna became the centralist president of Mexico. The conservative-dominated Congress abandoned

20230-678: The question of slavery in the territories to be acquired polarized the Northern and Southern United States in the bitterest sectional conflict up to this time, which lasted for a deadlock of four years during which the Second Party System broke up, Mormon pioneers settled Utah , the California Gold Rush settled California , and New Mexico under a federal military U.S government turned back Texas's attempt to assert control over territory Texas claimed as far west as

20400-556: The raids of American forces. The Mexican army was using surplus British muskets (such as the Brown Bess ), left over from the Napoleonic Wars . While at the beginning of the war most American soldiers were still equipped with the very similar Springfield 1816 flintlock muskets, more reliable caplock models became increasingly popular as the conflict progressed. Some U.S. troops carried more modern weapons that gave them

20570-410: The ranching industry that was a mainstay of the northern economy. As a result, the demoralized civilian population of northern Mexico put up little resistance to the invading U.S. army. Furthermore, distance and hostile activity by Native Americans made communications and trade between the heartland of Mexico and provinces such as Alta California and New Mexico increasingly difficult. As a result, at

20740-453: The regular army was not sufficiently large to sustain extended conflicts on two fronts. The Oregon dispute with Britain was settled peaceably by treaty, allowing U.S. forces to concentrate on the southern border. The war was fought by regiments of regulars bolstered by various regiments, battalions, and companies of volunteers from the different states of the Union, as well as Americans and some Mexicans in California and New Mexico. in general,

20910-427: The run up to the Civil War were partisan politics , abolitionism , nullification versus secession , Southern and Northern nationalism, expansionism , economics , and modernization in the antebellum period . As a panel of historians emphasized in 2011, "while slavery and its various and multifaceted discontents were the primary cause of disunion, it was disunion itself that sparked the war." Abraham Lincoln won

21080-527: The scattered settlements. Indigenous populations in Mexico played a crucial role in the defending their land. By the beginning of the war, indigenous populations were depleted of their natural resources due to an influx of American settlers. As a result, indigenous populations from the Great Plains region had to rely on raiding American camps in order to survive. Although raiding was much more lucrative than hunting, indigenous population did not have much of

21250-454: The south). Until the American Civil War (1861-1865), the question of whether future Western states formed out of these 1848 Mexican Cession lands would or would not permit the institution of slavery in the newly acquired territories was a major American political issue in the following decade of the 1850s leading up as one of the causes of the later tragedy of Civil War. Alta California and Santa Fe de Nuevo México were captured soon after

21420-686: The southern U.S. slave states . As settlers poured in from the U.S., the Mexican government discouraged further migration with its 1829 abolition of slavery. During the Spanish colonial era, the Californias (i.e., the Baja California peninsula and Alta California) were sparsely settled. After Mexico became independent, it shut down the missions and reduced its military presence. In 1842, the U.S. minister in Mexico, Waddy Thompson Jr. , suggested Mexico might be willing to cede Alta California to

21590-636: The southwestern corner of Missouri (see Missouri secession ). Early in the war the Confederacy controlled southern Missouri through the Confederate government of Missouri but was driven out after 1862. In the resulting vacuum, the convention on secession reconvened and took power as the Unionist provisional government of Missouri. Kentucky did not secede, it declared itself neutral. When Confederate forces entered in September 1861, neutrality ended and

21760-532: The stalwart island Fort Sumter. Anderson's actions catapulted him to hero status in the North. An attempt to resupply the fort on January 9, 1861, failed and nearly started the war then, but an informal truce held. On March 5, Lincoln was informed the fort was low on supplies. Fort Sumter proved a key challenge to Lincoln's administration. Back-channel dealing by Seward with the Confederates undermined Lincoln's decision-making; Seward wanted to pull out. But

21930-425: The start of the war and the last resistance there was subdued in January 1847, but Mexico would not accept the loss of territory. Therefore, during 1847, troops from the United States invaded central Mexico and occupied the Mexican capital of Mexico City , but still no Mexican government was willing to ratify the transfer of the northern territories to the U.S. It was uncertain whether any treaty could be reached. There

22100-446: The state reaffirmed its Union status while maintaining slavery. During an invasion by Confederate forces in 1861, Confederate sympathizers and delegates from 68 Kentucky counties organized the secession Russellville Convention, formed the shadow Confederate Government of Kentucky , inaugurated a governor, and Kentucky was admitted into the Confederacy on December 10, 1861. Its jurisdiction extended only as far as Confederate battle lines in

22270-597: The steady trend of migration from the United States into the Texas frontier. Austin's colony was the most successful of several colonies authorized by the Mexican government. The Mexican government intended the new settlers to act as a buffer between the Tejano residents and the Comanches, but the non-Hispanic colonists tended to settle in areas with decent farmland and trade connections with Louisiana rather than farther west where they would have been an effective buffer against

22440-457: The substitute provision to select which man should go into the army and which should stay home. There was much evasion and resistance to the draft, especially in Catholic areas. The New York City draft riots in July 1863 involved Irish immigrants who had been signed up as citizens to swell the vote of the city's Democratic political machine , not realizing it made them liable for the draft. Of

22610-429: The territories to the United States would tarnish the national honor. Mexicans who opposed direct conflict with the United States, including President José Joaquín de Herrera , were viewed as traitors. Military opponents of de Herrera, supported by populist newspapers, considered Slidell's presence in Mexico City an insult. When de Herrera considered receiving Slidell to settle the problem of Texas annexation peacefully, he

22780-506: The thousands that never tried. European merchant ships could not get insurance and were too slow to evade the blockade, so they stopped calling at Confederate ports. To fight an offensive war, the Confederacy purchased arms in Britain and converted British-built ships into commerce raiders . The smuggling of 600,000 arms enabled the Confederacy to fight on for two more years, and the commerce raiders targeted U.S. Merchant Marine ships in

22950-425: The time of their Revolution of 1836 set at the Rio Grande and extending north to the headwaters of the Rio Grande, not corresponding to Mexican territorial boundaries. The southern boundary was set by the war-ending peace Treaty of Guadalupe Hidalgo, which used and followed the original Mexican boundaries between Alta California (to the north) and Baja California (Lower California) and the Mexican state of Sonora (to

23120-463: The total area of the current United States. If the disputed western Texas claims are also included, that amounts to a total of 750,000 square miles (1,900,000 km ). If all of Texas is included, since Mexico had not previously acknowledged the loss of any part of Texas, the total area ceded under this treaty comes to 915,000 square miles (2,400,000 km ). Considering the seizures, including all of Texas, Mexico lost 55% of its pre-1836 territory in

23290-629: The town in the streets." Many of the volunteers were unwanted and considered poor soldiers. The expression "Just like Gaines's army" came to refer to something useless, the phrase having originated when a group of untrained and unwilling Louisiana troops was rejected and sent back by General Taylor at the beginning of the war. In his 1885 memoirs, Ulysses Grant assesses the U.S. armed forces facing Mexico more favorably. The victories in Mexico were, in every instance, over vastly superior numbers. There were two reasons for this. Both General Scott and General Taylor had such armies as are not often got together. At

23460-481: The treaty was actually the Nueces River , since the current Rio Grande has always been called "Rio Bravo" in Mexico. The latter claim belied the full name of the river in Mexico, however: "Rio Bravo del Norte." The ill-fated Texan Santa Fe Expedition of 1841 attempted to realize the claim to New Mexican territory east of the Rio Grande, but its members were captured by the Mexican Army and imprisoned. Reference to

23630-529: The treaty, rejecting amendments from Jefferson Davis to also annex most of northeastern Mexico and from Daniel Webster to decline to take Alta California and Santa Fe de Nuevo México. The United States paid $ 15 million ($ 482 million in 2016 dollars) for the damage caused by the war in Mexico's territory and agreed to assume $ 3.25 million in debts to U.S. citizens. The Mexican Cession as ordinarily understood (i.e. excluding lands claimed by Texas) amounted to 525,000 square miles (1,400,000 km ), or 14.9% of

23800-499: The upper Rio Grande. U.S. forces also moved against the province of Alta California and then turned south. The Pacific Squadron of the U.S. Navy blockaded the Pacific coast in the lower Baja California Territory . The U.S. Army, under Major General Winfield Scott , invaded the Mexican heartland via an amphibious landing at the port of Veracruz on March 9 and captured the capital, Mexico City , in September 1847. Although Mexico

23970-537: The volunteers that participated in all the later battles of the war; but they were brave men, and then drill and discipline brought out all there was in them. A better army, man for man, probably never faced an enemy than the one commanded by General Taylor in the earliest two engagements of the Mexican war. The volunteers who followed were of better material, but without drill or discipline at the start. They were associated with so many disciplined men and professionally educated officers, that when they went into engagements it

24140-430: The war created jobs for arms makers, ironworkers, and ships to transport weapons. Lincoln's administration initially struggled to appeal to European public opinion. At first, diplomats explained that the U.S. was not committed to ending slavery and emphasized legal arguments about the unconstitutionality of secession. Confederate representatives, however, focused on their struggle for liberty, commitment to free trade, and

24310-478: The war due to multiple factors: severe food shortages, failing railroads, loss of control over key rivers, foraging by Northern armies, and the seizure of animals and crops by Confederate forces. Historians agree the blockade was a major factor in ruining the Confederate economy; however, Wise argues blockade runners provided enough of a lifeline to allow Lee to continue fighting for additional months, thanks to supplies like 400,000 rifles, lead, blankets, and boots that

24480-594: The war effort. After having to face the losses in their country, Mexican women were seen dressed in black and creating somber paintings. American and Mexican women shared the similarities of providing their domestic services on the battlefield. Among the most notable American women on the battlefield was Sarah Bowman . She was often seen delivering food, carrying wounded soldiers, and in close combat. In Mexico While their husbands enlisted, many American women stayed in Mexico to tend to oversee their business, making themselves factory women. However, factory woman Ann Chase

24650-431: The war effort. Inside Mexico, the conservative centralistas and liberal federalists vied for power, and at times these two factions inside Mexico's military fought each other rather than the invading U.S. Army. Santa Anna bitterly remarked, "However shameful it may be to admit this, we have brought this disgraceful tragedy upon ourselves through our interminable in-fighting." During the conflict, presidents held office for

24820-493: The war, including Anne Royall , Jane Swisshelm , and Jane Cazneau . Female American journalists played a crucial role in representing the voices of women that had been silenced within the public sphere. Mexican Cession Most of the area had been considered the Mexican territory and province of Alta California (Upper California), while a southeastern strip on the river Rio Grande had been part of Santa Fe de Nuevo México , most of whose area and population were east of

24990-603: The war. In December 1860, the Crittenden Compromise was proposed to re-establish the Missouri Compromise line, by constitutionally banning slavery in territories to the north of it, while permitting it to the south. The Compromise would likely have prevented secession, but Lincoln and the Republicans rejected it. Lincoln stated that any compromise that would extend slavery would bring down

25160-436: The winter of 1860–1861. Nationalists in the North and "Unionists" in the South refused to accept the declarations of secession. No foreign government ever recognized the Confederacy. The U.S. government, under President James Buchanan , refused to relinquish its forts that were in territory claimed by the Confederacy. According to Lincoln, the American people had shown they had been successful in establishing and administering

25330-425: The world" within a few years. Some European observers at the time dismissed them as amateur and unprofessional, but historian John Keegan concluded that each outmatched the French, Prussian, and Russian armies, and without the Atlantic, could have threatened any of them with defeat. Unionism was strong in certain areas within the Confederacy. As many as 100,000 men living in states under Confederate control served in

25500-506: The worsening situation on the northern frontier was largely neglected. In northern Mexico, the end of Spanish rule was marked by the end of financing for garrisoned presidios and the pay-offs to Native Americans to maintain peace. In the absence of effective governance, Comanche and Apache took to raiding for livestock and looted much of the northern countryside outside of the scattered towns. The raids after 1821 resulted in many deaths, halted most transportation and communications, and decimated

25670-452: Was accused of treason and deposed. After a more nationalistic government under General Mariano Paredes y Arrillaga came to power, it publicly reaffirmed Mexico's claim to Texas. The Mexican Army was a weak and divided force. Only 7 of the 19 states that formed the Mexican federation sent soldiers, armament, and money for the war effort. Many leaders expressed their concern for the country, including Santa Anna who stated that , "The leaders of

25840-468: Was captured by the Texian Army during the 1836 Texas Revolution . The Republic of Texas was de facto an independent country, but most of its Anglo-American citizens who had moved from the United States to Texas after 1822 wanted to be annexed by the United States. Sectional politics over slavery in the United States had previously prevented annexation because Texas would have been admitted as

26010-572: Was defeated on the battlefield, negotiating peace was a politically fraught issue. Some Mexican factions refused to consider any recognition of its loss of territory. Although Polk formally relieved his peace envoy, Nicholas Trist , of his post as negotiator, Trist ignored the order and successfully concluded the 1848 Treaty of Guadalupe Hidalgo . It ended the war, and Mexico recognized the cession of present-day Texas, California, Nevada, and Utah as well as parts of present-day Arizona, Colorado, New Mexico, and Wyoming. The U.S. agreed to pay $ 15 million for

26180-525: Was disputed, with the Republic of Texas and the U.S. asserting it to be the Rio Grande and Mexico claiming it to be the more-northern Nueces River . Polk sent a diplomatic mission to Mexico in an attempt to buy the disputed territory, together with California and everything in between for $ 25   million (equivalent to $ 778 million in 2023), an offer the Mexican government refused. Polk then sent

26350-429: Was doubted by some in the U.S., but they were not counted as deserters. The volunteers were far less disciplined than the regular army, with many committing attacks on the civilian population, sometimes stemming from anti-Catholic and anti-Mexican racial bias. Soldiers' memoirs describe cases of looting and murder of Mexican civilians, mostly by volunteers. One officer's diary records: "We reached Burrita about 5 pm, many of

26520-463: Was drilled only in regiments. The artillery hardly ever maneuvered and never fired a blank shot. The general in command was never present on the field of maneuvers, so that he was unable to appreciate the respective qualities of the various bodies under his command ... If any meetings of the principal commanding officers were held to discuss the operations of the campaign, it was not known, nor was it known whether any plan of campaign had been formed." At

26690-481: Was even an All of Mexico Movement proposing complete annexation of Mexico among Eastern Democrats but opposed by Southerners like John C. Calhoun who wanted the additional territory for their crops but not the large population of central Mexico. Eventually Nicholas Trist forged the Treaty of Guadalupe Hidalgo , explicitly redefining the border between Mexico and the United States in early 1848 after President Polk had already attempted to recall him from Mexico as

26860-408: Was high because many soldiers were more concerned about the fate of their local area than the Southern cause. In the North, " bounty jumpers " enlisted to collect the generous bonus, deserted, then re-enlisted under a different name for a second bonus; 141 were caught and executed. From a tiny frontier force in 1860, the Union and Confederate armies grew into the "largest and most efficient armies in

27030-629: Was his practice, he left the administration to his vice president, who was again liberal Valentín Gómez Farías (December 23, 1846 – March 21, 1847). In February 1847, conservatives rebelled against the liberal government's attempt to take Church property to fund the war effort. In the Revolt of the Polkos , the Catholic Church and conservatives paid soldiers to rise against the liberal government. Santa Anna had to leave his campaign to return to

27200-405: Was made of bullion lost from mints. He stated that it would be US policy "to collect the duties and imposts"; "there will be no invasion, no using of force against or among the people anywhere" that would justify an armed revolution. His speech closed with a plea for restoration of the bonds of union, famously calling on "the mystic chords of memory" binding the two regions. The Davis government of

27370-566: Was marked by intense and frequent battles. Over four years, 237 named battles were fought, along with many smaller actions, often characterized by their bitter intensity and high casualties. Historian John Keegan described it as "one of the most ferocious wars ever fought," where, in many cases, the only target was the enemy's soldiers. As the Confederate states organized, the U.S. Army numbered 16,000, while Northern governors began mobilizing their militias. The Confederate Congress authorized up to 100,000 troops in February. By May, Jefferson Davis

27540-557: Was merely buying supplies on the way to Oregon, he instead went to the populated area of California and visited Santa Cruz and the Salinas Valley , explaining he had been looking for a seaside home for his mother. Mexican authorities became alarmed and ordered him to leave. Frémont responded by building a fort on Gavilan Peak and raising the American flag. Larkin sent word that Frémont's actions were counterproductive. Frémont left California in March but returned and took control of

27710-512: Was not successful, and with the ironclad CSS  Virginia , rebuilt from the sunken Union ship Merrimack . On March 8, 1862, Virginia inflicted significant damage on the Union's wooden fleet, but the next day, the first Union ironclad, USS  Monitor , arrived to challenge it in the Chesapeake Bay . The resulting three-hour Battle of Hampton Roads was a draw, proving ironclads were effective warships. The Confederacy scuttled

27880-460: Was pushing for another 100,000 soldiers for one year or the duration, and the U.S. Congress responded in kind. In the first year of the war, both sides had more volunteers than they could effectively train and equip. After the initial enthusiasm faded, relying on young men who came of age each year was not enough. Both sides enacted draft laws (conscription) to encourage or force volunteering, though relatively few were drafted. The Confederacy passed

28050-521: Was sent up from lower Mexico, along with an army, that had largely been recruited from Mexico's worst jails. The Californios resented this, partly because California had previously been governed by native-born Californios, partly because Micheltorena's policies were unpopular, and also because the soldiers in Micheltorena's army got a reputation for spending much of their time stealing the local Californios' chickens. Women were not considered safe from

28220-769: Was sworn in as president. In his inaugural address , he argued that the Constitution was a more perfect union than the earlier Articles of Confederation and Perpetual Union , was a binding contract, and called secession "legally void". He did not intend to invade Southern states, nor to end slavery where it existed, but he said he would use force to maintain possession of federal property, including forts, arsenals, mints, and customhouses that had been seized. The government would not try to recover post offices, and if resisted, mail delivery would end at state lines. Where conditions did not allow peaceful enforcement of federal law, US marshals and judges would be withdrawn. No mention

28390-439: Was the principal cause of the secession, a view disproven by historical evidence, notably some of the seceding states' own secession documents . After leaving the Union, Mississippi issued a declaration stating, "Our position is thoroughly identified with the institution of slavery—the greatest material interest of the world." The principal political battle leading to Southern secession was over whether slavery would expand into

28560-525: Was too late. " King Cotton " was dead, as the South could export less than 10% of its cotton. The blockade shut down the ten Confederate seaports with railheads that moved almost all the cotton. By June 1861, warships were stationed off the principal Southern ports, and a year later nearly 300 ships were in service. The Confederates began the war short on military supplies, which the agrarian South could not produce. Northern arms manufacturers were restricted by an embargo, ending existing and future contracts with

28730-457: Was willing enough to become a spy for U.S. forces in order to protect her home and business in the absence of her husband. In the U.S. Similarly to the Mexican women were contributed to the war efforts from their homes, women in the U.S. also protested publicly and made patriotic crafts that U.S. soldiers could carry. In addition, female journalists across multiple states took advantage of their literacy to speak up in support or in opposition of

28900-476: Was with a confidence they would not have felt otherwise. They became soldiers themselves almost at once. All these conditions we would enjoy again in case of war. The U.S. had been an independent country since the American Revolution , but it was a country that was strongly divided along sectional lines, especially in regard to slavery. Enlarging the country, particularly through armed combat against

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