Challenger is an American brand of agricultural tractors . Created in 1986 by Caterpillar Inc. , the brand was sold to AGCO in 2002. Since then, Challenger tractors have been manufactured at the company's Jackson, Minnesota facility.
85-544: The original model was the Challenger 65 featuring the Mobile-Trac System (MTS) consisting of rubber tracks and a suspension system. Although marketed as the world's first rubber-tracked agricultural tractor, a company using surplus equipment inspired by the design of military tanks had produced a considerable number of rubber tracked tank tractors. The MTS combined the flotation and traction of steel tracks with
170-446: A council-manager government . Policy is developed by an elected city council and implemented by an appointed professional city manager. The DeKalb City Council is made up of a mayor, elected at-large, and seven alderpersons, elected by ward. Each serves a four-year term, with half the council elected every two years. A city clerk is also elected every four years to serve as the city's official recordkeeper. City council meetings are held
255-403: A Democrat, was elected in 1955, in the era of machine politics . In 1956, the city conducted its last major expansion when it annexed the land under O'Hare airport, including a small portion of DuPage County. By the 1960s, white residents in several neighborhoods left the city for the suburban areas – in many American cities, a process known as white flight – as Blacks continued to move beyond
340-412: A custom-made, 14 metres (46 ft) disc harrow fabricated by Grégoire Besson. It tilled 644 hectares (1,590 acres). The tractor consumed 4.42 litres per hectare (0.393 imp gal/acre) diesel fuel . The production of Challenger tractors expanded for a time to include both tracked and wheeled type tractors, which were available in either row-crop or flotation type configurations depending upon
425-567: A facet of the city, along with health and services, the city's largest employer in the 21st century is Northern Illinois University , founded in 1895. DeKalb is about 65 miles (105 km) from downtown Chicago . DeKalb was originally called Huntley's Grove, and under the latter name was platted in 1853. The name is for Baron Johann de Kalb , a major general in the American Revolutionary War. The first church in DeKalb
510-462: A female householder with no husband present, and 50.73% were non-families. 34.52% of all households were made up of individuals, and 7.78% had someone living alone who was 65 years of age or older. The average household size was 3.22 and the average family size was 2.45. The city's age distribution consisted of 17.9% under the age of 18, 31.8% from 18 to 24, 24% from 25 to 44, 17.2% from 45 to 64, and 9.1% who were 65 years of age or older. The median age
595-495: A heart attack soon after. Washington was succeeded by 6th ward alderperson Eugene Sawyer , who was elected by the Chicago City Council and served until a special election. Richard M. Daley , son of Richard J. Daley, was elected in 1989. His accomplishments included improvements to parks and creating incentives for sustainable development , as well as closing Meigs Field in the middle of the night and destroying
680-513: A leading role in the development of commercial hybrid corn . From a base in the early county Farm Bureau , the DeKalb Agricultural Association produced large quantities of high-yield seed varieties, beginning in 1934. Until the mid-1970s, more American farmers planted DeKalb hybrid corn than any other brand. The DeKalb logo was a flying ear of corn. A series of joint ventures and mergers beginning in 1982 resulted in
765-665: A model for the new field of social work . During the 1870s and 1880s, Chicago attained national stature as the leader in the movement to improve public health. City laws and later, state laws that upgraded standards for the medical profession and fought urban epidemics of cholera , smallpox , and yellow fever were both passed and enforced. These laws became templates for public health reform in other cities and states. The city established many large, well-landscaped municipal parks , which also included public sanitation facilities. The chief advocate for improving public health in Chicago
850-479: A new grade with the use of jackscrews for raising buildings. While elevating Chicago, and at first improving the city's health, the untreated sewage and industrial waste now flowed into the Chicago River , and subsequently into Lake Michigan , polluting the city's primary freshwater source. The city responded by tunneling two miles (3.2 km) out into Lake Michigan to newly built water cribs . In 1900,
935-405: A variety of tasks the larger machines could not. The Challenger tracked tractor was produced by Caterpillar at their Dekalb, Illinois location until the Challenger name and all of its associated agricultural assets were sold to AGCO. During the late 1990s, the Challenger 65B was introduced. This was an upgraded version of the 65 model. It retained the bulk of the original’s specifications except for
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#17327875362841020-508: A wider surrounding area with on-demand transportation for people with special needs and to out-of-town medical appointments. DeKalb Taylor Municipal Airport (DTMA) ( ICAO : KDKB , FAA LID : DKB ), serving the general aviation community, is on the east side of the city at 3232 Pleasant Street. The airport opened in April 1944 in association with a factory making Interstate TDR assault drone aircraft. The city took ownership in 1948. There
1105-570: Is a city in DeKalb County, Illinois , United States. The population was 40,290 at the 2020 census . The city is named after decorated Franconian -French war hero Johann de Kalb , who died during the American Revolutionary War . Founded in 1856, DeKalb became important in the development and manufacture of barbed wire , especially for agriculture and raising livestock. While agricultural-related industries remain
1190-410: Is an international hub for finance, culture , commerce, industry, education, technology, telecommunications, and transportation . It has the largest and most diverse finance derivatives market in the world, generating 20% of all volume in commodities and financial futures alone. O'Hare International Airport is routinely ranked among the world's top six busiest airports by passenger traffic , and
1275-407: Is known to botanists as Allium tricoccum and known more commonly as "ramps". The first known reference to the site of the current city of Chicago as " Checagou " was by Robert de LaSalle around 1679 in a memoir. Henri Joutel , in his journal of 1688, noted that the eponymous wild "garlic" grew profusely in the area. According to his diary of late September 1687: ... when we arrived at
1360-623: Is land and 0.17 square miles (0.44 km ) (or 0.97%) is water. On August 24, 2007, the Kishwaukee River at DeKalb crested at 15.27 feet (4.65 m) (all-time record 15.8 feet (4.8 m)), causing major flooding. This was only the second time the river has risen above 15 feet (4.6 m) since the level of the river has been recorded. DeKalb has a humid continental climate ( Köppen climate classification Dfa) typical of northern Illinois, with four distinct seasons. Summers can be hot, while winters are cold and snowy. Precipitation
1445-541: Is no commercial service directly to DeKalb, but the city center is 43.43 miles away from O'Hare International Airport in Chicago , making commercial air access relatively easy. Chicago Chicago is the most populous city in the U.S. state of Illinois and in the Midwestern United States . With a population of 2,746,388, as of the 2020 census , it is the third-most populous city in
1530-437: Is somewhat uniform year-round, although it can be heavier in the spring and summer when the area is prone to strong thunderstorms. As of the 2020 census there were 40,290 people, 15,839 households, and 7,804 families residing in the city. The population density was 2,353.66 inhabitants per square mile (908.75/km ). There were 16,629 housing units at an average density of 971.43 per square mile (375.07/km ). The racial makeup of
1615-479: The Black Belt . While home loan discriminatory redlining against blacks continued, the real estate industry practiced what became known as blockbusting , completely changing the racial composition of whole neighborhoods. Structural changes in industry, such as globalization and job outsourcing, caused heavy job losses for lower-skilled workers. At its peak during the 1960s, some 250,000 workers were employed in
1700-719: The Calumet River in the industrial far South Side—flow either entirely or partially through the city. Chicago's history and economy are closely tied to its proximity to Lake Michigan. While the Chicago River historically handled much of the region's waterborne cargo, today's huge lake freighters use the city's Lake Calumet Harbor on the South Side. The lake also provides another positive effect: moderating Chicago's climate, making waterfront neighborhoods slightly warmer in winter and cooler in summer. When Chicago
1785-599: The Great Lakes to connect to the Mississippi River. A flourishing economy brought residents from rural communities and immigrants from abroad. Manufacturing and retail and finance sectors became dominant, influencing the American economy . The Chicago Board of Trade (established 1848) listed the first-ever standardized "exchange-traded" forward contracts, which were called futures contracts . In
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#17327875362841870-542: The Jefferson Township , which now makes up most of Chicago's Northwest Side . The desire to join the city was driven by municipal services that the city could provide its residents. Chicago's flourishing economy attracted huge numbers of new immigrants from Europe and migrants from the Eastern United States . Of the total population in 1900, more than 77% were either foreign-born or born in
1955-511: The Miami , Sauk and Meskwaki peoples in this region. The first known permanent settler in Chicago was trader Jean Baptiste Point du Sable . Du Sable was of African descent, perhaps born in the French colony of Saint-Domingue (Haiti), and established the settlement in the 1780s. He is commonly known as the "Founder of Chicago." In 1795, following the victory of the new United States in
2040-686: The Mississippi River watershed . It grew rapidly in the mid-19th century. In 1871, the Great Chicago Fire destroyed several square miles and left more than 100,000 homeless, but Chicago's population continued to grow. Chicago made noted contributions to urban planning and architecture , such as the Chicago School , the development of the City Beautiful movement , and the steel-framed skyscraper . Chicago
2125-655: The New Negro Movement , in art, literature, and music. Continuing racial tensions and violence, such as the Chicago race riot of 1919 , also occurred. The ratification of the 18th amendment to the Constitution in 1919 made the production and sale (including exportation) of alcoholic beverages illegal in the United States. This ushered in the beginning of what is known as the gangster era, a time that roughly spans from 1919 until 1933 when Prohibition
2210-836: The Northwest Indian War , an area that was to be part of Chicago was turned over to the U.S. for a military post by native tribes in accordance with the Treaty of Greenville . In 1803, the U.S. Army constructed Fort Dearborn , which was destroyed during the War of 1812 in the Battle of Fort Dearborn by the Potawatomi before being later rebuilt. After the War of 1812, the Ottawa , Ojibwe , and Potawatomi tribes ceded additional land to
2295-469: The University of Chicago , Northwestern University , and the University of Illinois Chicago , among other institutions of learning . Professional sports in Chicago include all major professional leagues , including two Major League Baseball teams. The name Chicago is derived from a French rendering of the indigenous Miami–Illinois word shikaakwa for a wild relative of the onion ; it
2380-698: The Washington and Jackson Parks. During World War I and the 1920s there was a major expansion in industry. The availability of jobs attracted African Americans from the Southern United States . Between 1910 and 1930, the African American population of Chicago increased dramatically, from 44,103 to 233,903. This Great Migration had an immense cultural impact, called the Chicago Black Renaissance , part of
2465-536: The poverty line , including 34.8% of those under age 18 and 6.6% of those age 65 or over. As of the census of 2000, there are 39,018 people, 13,081 households, and 6,566 families residing in the city. The population density is 1,194.7/km² (3,093.9/mi²). There are 13,619 housing units at an average density of 417.0/km² (1,079.9/mi²). The racial makeup of the city is 79.49% White, 9.08% African American, 0.24% Native American, 4.62% Asian, 0.13% Pacific Islander, 4.35% from other races, and 2.09% from two or more races. 9.04% of
2550-494: The 1800s, Chicago became the nation's railroad hub, and by 1910 over 20 railroads operated passenger service out of six different downtown terminals. In 1883, Chicago's railway managers needed a general time convention, so they developed the standardized system of North American time zones . This system for telling time spread throughout the continent. In 1893, Chicago hosted the World's Columbian Exposition on former marshland at
2635-477: The 1850s, Chicago gained national political prominence as the home of Senator Stephen Douglas , the champion of the Kansas–Nebraska Act and the "popular sovereignty" approach to the issue of the spread of slavery. These issues also helped propel another Illinoisan, Abraham Lincoln , to the national stage. Lincoln was nominated in Chicago for U.S. president at the 1860 Republican National Convention , which
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2720-705: The 57th mayor of Chicago. Chicago is located in northeastern Illinois on the southwestern shores of freshwater Lake Michigan. It is the principal city in the Chicago Metropolitan Area , situated in both the Midwestern United States and the Great Lakes region . The city rests on a continental divide at the site of the Chicago Portage, connecting the Mississippi River and the Great Lakes watersheds . In addition to it lying beside Lake Michigan, two rivers—the Chicago River in downtown and
2805-719: The Barbs. Northern Illinois University (NIU) was founded in DeKalb as the Northern Illinois State Normal School in 1895. NIU is a comprehensive teaching and research institution with total enrollment around 20,000, which makes NIU the third largest campus in Illinois. The first railroad entered DeKalb on August 22, 1853. In 1864, the line became part of the Chicago and North Western Railway main line from Chicago to Omaha, which carried passengers until 1971. A depot between 6th and 7th Streets
2890-455: The Chicago River were devastated; by 1933 over 50% of industrial jobs in the city had been lost, and unemployment rates amongst blacks and Mexicans in the city were over 40%. The Republican political machine in Chicago was utterly destroyed by the economic crisis, and every mayor since 1931 has been a Democrat . From 1928 to 1933, the city witnessed a tax revolt, and the city was unable to meet payroll or provide relief efforts. The fiscal crisis
2975-403: The DeKalb area is provided by DeKalb Public Transit , a joint effort by the city in partnership with Northern Illinois University. Routes extend through the university, the city, and Sycamore with extensions west to Kishwaukee College and east to the passenger rail station at Elburn. Schedules on the main routes vary depending on whether the university is in session. The system began in 1971 as
3060-436: The DeKalb brand of agricultural products being owned by Bayer since 2017. DeKalb is in northern Illinois, about 65 miles (105 km) west of downtown Chicago and 30 miles southeast of Rockford. The South Branch Kishwaukee River flows northward through DeKalb. According to the 2021 census gazetteer files, DeKalb has a total area of 17.12 square miles (44.34 km ), of which 16.95 square miles (43.90 km ) (or 99.03%)
3145-625: The Huskie Bus Line under contract to the NIU Student Association. By 1982 the system served 3 million riders per year, second only in Illinois to the Chicago Transit Authority . In 2018, it merged with a smaller City of DeKalb bus system, which had been operated by the local Voluntary Action Center (VAC). Paratransit operations were added in 2021, also by transfer from VAC. VAC continues to serve
3230-535: The Mississippi River. In 1871, the Great Chicago Fire destroyed an area about 4 miles (6.4 km) long and 1-mile (1.6 km) wide, a large section of the city at the time. Much of the city, including railroads and stockyards , survived intact, and from the ruins of the previous wooden structures arose more modern constructions of steel and stone. These set a precedent for worldwide construction. During its rebuilding period, Chicago constructed
3315-578: The South arrived in the city to work in the steel mills, railroads, and shipping yards. On December 2, 1942, physicist Enrico Fermi conducted the world's first controlled nuclear reaction at the University of Chicago as part of the top-secret Manhattan Project . This led to the creation of the atomic bomb by the United States, which it used in World War II in 1945. Mayor Richard J. Daley ,
3400-404: The United States after New York City and Los Angeles . As the seat of Cook County , the second-most populous county in the U.S., Chicago is the center of the Chicago metropolitan area , often colloquially called "Chicagoland" and home to 9.6 million residents. Located on the shore of Lake Michigan , Chicago was incorporated as a city in 1837 near a portage between the Great Lakes and
3485-557: The United States in the 1816 Treaty of St. Louis . The Potawatomi were forcibly removed from their land after the 1833 Treaty of Chicago and sent west of the Mississippi River as part of the federal policy of Indian removal . On August 12, 1833, the Town of Chicago was organized with a population of about 200. Within seven years it grew to more than 6,000 people. On June 15, 1835, the first public land sales began with Edmund Dick Taylor as Receiver of Public Monies. The City of Chicago
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3570-787: The United States of foreign parentage. Germans , Irish , Poles , Swedes , and Czechs made up nearly two-thirds of the foreign-born population (by 1900, whites were 98.1% of the city's population). Labor conflicts followed the industrial boom and the rapid expansion of the labor pool, including the Haymarket affair on May 4, 1886, and in 1894 the Pullman Strike . Anarchist and socialist groups played prominent roles in creating very large and highly organized labor actions. Concern for social problems among Chicago's immigrant poor led Jane Addams and Ellen Gates Starr to found Hull House in 1889. Programs that were developed there became
3655-478: The atmosphere. As of 2023, only tracked tractors in the 700 Series (MT738, MT740, and MT743 models) and 800 Series (MT851, MT856, MT862, and MT865 models) are in production. AGCO began phasing out the Challenger brand in 2020. Additionally, the Rogator application machine is now produced and sold under AGCO's Fendt brand name. Dekalb, Illinois DeKalb ( / d ɪ ˈ k æ l b / dih- KALB )
3740-565: The city include the central business district, called the Loop , and the North, South , and West Sides . The three sides of the city are represented on the Flag of Chicago by three horizontal white stripes. The North Side is the most-densely-populated residential section of the city, and many high-rises are located on this side of the city along the lakefront. The South Side is the largest section of
3825-406: The city was 58.73% White , 18.48% African American , 0.76% Native American , 3.92% Asian , 0.04% Pacific Islander , 7.99% from other races , and 10.08% from two or more races. Hispanic or Latino of any race were 17.83% of the population. There were 15,839 households, out of which 25.9% had children under the age of 18 living with them, 32.03% were married couples living together, 13.14% had
3910-545: The city was affected by a series of tenant rent strikes , which lead to the formation of the Chicago Tenants Protective association, passage of the Kessenger tenant laws, and of a heat ordinance that legally required flats to be kept above 68 °F during winter months by landlords. Chicago was the first American city to have a homosexual-rights organization. The organization, formed in 1924,
3995-415: The city's first African American woman mayor and its first openly LGBTQ mayor, was elected to succeed Emanuel as mayor in 2019. All three city-wide elective offices were held by women (and women of color) for the first time in Chicago history: in addition to Lightfoot, the city clerk was Anna Valencia and the city treasurer was Melissa Conyears-Ervin . On May 15, 2023, Brandon Johnson assumed office as
4080-424: The city's first female mayor, was elected. She was notable for temporarily moving into the crime-ridden Cabrini-Green housing project and for leading Chicago's school system out of a financial crisis. In 1983, Harold Washington became the first black mayor of Chicago. Washington's first term in office directed attention to poor and previously neglected minority neighborhoods. He was re‑elected in 1987 but died of
4165-482: The city. In May 2023, the initial key facts of the feasibility study were published, which showed that an extension to Dekalb was feasible based on commuter and daily ridership estimates. In 2024, Dekalb backed a regional feasibility study by federal officials to revive Amtrak service that ran as the Twin Cities Zephyr , the service was discontinued in the 1970s. The transcontinental Lincoln Highway
4250-465: The construction market is still an important sector for the tractors as AGCO still manufactures specially configured machines for use with pull-type earth moving equipment. The Caterpillar Challenger MT875B was the most powerful production tractor available during its span with 430 kW gross (580 hp) engine power. In 2007, the MT875B broke the world record for most land tilled in 24 hours with
4335-527: The convention hall, with anti-war protesters, journalists and bystanders being beaten by police. Major construction projects, including the Sears Tower (now known as the Willis Tower , which in 1974 became the world's tallest building ), University of Illinois at Chicago , McCormick Place , and O'Hare International Airport , were undertaken during Richard J. Daley's tenure. In 1979, Jane Byrne ,
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#17327875362844420-489: The corner of Fourth and Lincoln. Interstate Highway 88 , part of the Illinois Tollway system, was completed to DeKalb around 1975 and passes just south of town, where there are two toll plazas and a service oasis that includes restaurants and a gas station. Via the tollway, DeKalb is 30 miles (48 km) west of Aurora and 65 miles (105 km) west of downtown Chicago . Scheduled local bus service throughout
4505-607: The distribution hub for three of 3M's four business units and export operations to North America, Europe, Africa, the Middle East and Latin America. In 2011, DeKalb was the broadcast base of Up and In: The Baseball Prospectus Podcast with Kevin Goldstein and Jason Parks. The town was also the filming location for the 2012 film At Any Price . In June, 2020, Meta announced it would construct an $ 800 million data center on
4590-483: The district and forcing a shutdown of electrical power. The area was shut down for three days and some buildings did not reopen for weeks; losses were estimated at $ 1.95 billion. On February 23, 2011, Rahm Emanuel , a former White House Chief of Staff and member of the House of Representatives , won the mayoral election. Emanuel was sworn in as mayor on May 16, 2011, and won re-election in 2015. Lori Lightfoot ,
4675-539: The fair was technological innovation over the century since Chicago's founding. During World War II , the city of Chicago alone produced more steel than the United Kingdom every year from 1939 – 1945, and more than Nazi Germany from 1943 – 1945. The Great Migration, which had been on pause due to the Depression, resumed at an even faster pace in the second wave , as hundreds of thousands of blacks from
4760-451: The lowest points are along the lake shore at 578 ft (176.2 m), while the highest point, at 672 ft (205 m), is the morainal ridge of Blue Island in the city's far south side. Lake Shore Drive runs adjacent to a large portion of Chicago's waterfront. Some of the parks along the waterfront include Lincoln Park , Grant Park , Burnham Park , and Jackson Park . There are 24 public beaches across 26 miles (42 km) of
4845-993: The park district in 1935 to address the need for a public swimming pool. The City of DeKalb gave the first four parks to the District: Annie's Woods, Huntley Park, Liberty Park, and Hopkins Park. In 2000 the district opened the Sports and Recreation Center, a multi-function facility that features an indoor field of over 1 acre, clear-span space with synthetic field turf. The park district provides year-round athletic and recreation programs including day camps, youth baseball and softball, adult softball leagues both indoors and outdoors, swimming lessons, golf lessons, karate, tennis, adult and youth basketball leagues, indoor soccer, fitness classes, and preschool. The DeKalb Park District park system has 44 parks totaling over 700 acres: community parks, neighborhood parks, passive parks and linear parks. Notable parks and facilities include: DeKalb has
4930-604: The population are Hispanic or Latino of any race. DeKalb is home to Northern Illinois University , the city's largest employer and Illinois's third-largest campus. Other large employers include Northwestern Medicine, General Electric , Monsanto (originally as DeKalb Corn ), the local school district, and a large retail district along Route 23 (shared with Sycamore ). DeKalb is also home to warehouses for several major companies, including Target, 3M, Nestlé, and Ferrara Candy Company, in part due to DeKalb's proximity to major highways such as I-88 and I-39. 3M's complex serves as
5015-499: The preference of the customer. Since their purchase in 2002, the Challenger brand has used a Caterpillar diesel engine in the majority of their models. However, with the introduction of the D series of each tractor model, AGCO began implementing the use of AGCO Power branded engines that are Tier 4i/Stage 3B emission compliant by using e, a Selective Catalytic Reduction system which injects urea in engine's exhaust gas stream to reduce nitrogen oxides and particulate matter emitted to
5100-506: The present location of Jackson Park . The Exposition drew 27.5 million visitors, and is considered the most influential world's fair in history. The University of Chicago , formerly at another location, moved to the same South Side location in 1892. The term "midway" for a fair or carnival referred originally to the Midway Plaisance , a strip of park land that still runs through the University of Chicago campus and connects
5185-557: The problem of sewage contamination was largely resolved when the city completed a major engineering feat. It reversed the flow of the Chicago River so that the water flowed away from Lake Michigan rather than into it. This project began with the construction and improvement of the Illinois and Michigan Canal, and was completed with the Chicago Sanitary and Ship Canal that connects to the Illinois River , which flows into
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#17327875362845270-462: The region is also the nation's railroad hub. The Chicago area has one of the highest gross domestic products (GDP) of any urban region in the world, generating $ 689 billion in 2018. Chicago's economy is diverse , with no single industry employing more than 14% of the workforce. Chicago is a major destination for tourism , including visitors to its cultural institutions , and Lake Michigan beaches . Chicago's culture has contributed much to
5355-593: The runways. After successfully running for re-election five times, and becoming Chicago's longest-serving mayor, Richard M. Daley declined to run for a seventh term. In 1992, a construction accident near the Kinzie Street Bridge produced a breach connecting the Chicago River to a tunnel below, which was part of an abandoned freight tunnel system extending throughout the downtown Loop district. The tunnels filled with 250 million US gallons (1,000,000 m ) of water, affecting buildings throughout
5440-615: The said place called "Chicagou" which, according to what we were able to learn of it, has taken this name because of the quantity of garlic which grows in the forests in this region. The city has had several nicknames throughout its history, such as the Windy City , Chi-Town, Second City, and City of the Big Shoulders. In the mid-18th century, the area was inhabited by the Potawatomi , an indigenous tribe who had succeeded
5525-407: The second and fourth Mondays of every month. There are 11 public schools, one private school, one university and one public library. DeKalb is served by both public and private school systems. DeKalb Community Unit School District 428 operates eight elementary schools (Grades K–5), Clinton Rosette and Huntley Middle Schools (Grades 6–8), and DeKalb High School (Grades 9–12), which is the home of
5610-479: The south side of DeKalb. DeKalb is home to the annual Corn Fest, usually held in late August. The Egyptian Theatre , built in 1929, is one of a handful of such theatres still extant in the United States. The Stage Coach Players, founded in 1947, have a theatre on 5th Street. The DeKalb Park District is responsible for DeKalb's 44 parks and recreation facilities. Members of the League of Women Voters established
5695-587: The steel industry in Chicago, but the steel crisis of the 1970s and 1980s reduced this number to just 28,000 in 2015. In 1966, Martin Luther King Jr. and Albert Raby led the Chicago Freedom Movement , which culminated in agreements between Mayor Richard J. Daley and the movement leaders. Two years later, the city hosted the tumultuous 1968 Democratic National Convention , which featured physical confrontations both inside and outside
5780-408: The system improvements that increased reliability. Since 2002, when the brand was purchased by AGCO , Challenger tractors have been manufactured at the company's Jackson, Minnesota facility. At the time AGCO purchased the Challenger brand most Challenger dealers were also Caterpillar construction equipment dealers. Although AGCO has shifted focus of the Challenger tractor to the agricultural market,
5865-562: The unemployed. In the spring of 1937 Republic Steel Works witnessed the Memorial Day massacre of 1937 in the neighborhood of East Side. In 1933, Chicago Mayor Anton Cermak was fatally wounded in Miami, Florida , during a failed assassination attempt on President-elect Franklin D. Roosevelt . In 1933 and 1934, the city celebrated its centennial by hosting the Century of Progress International Exposition World's Fair . The theme of
5950-467: The versatility of rubber tires. The use of tracks gave the machines increased tractive performance compared to traditional four wheel drive tractors equipped with tires. The Challenger 65 began as a 270 gross hp (200 kW) machine used primarily for heavy tillage. In 1995 Caterpillar introduced the first "row crop" tracked machines with the Challenger 35, 45 and 55. These machines ranged in power from 130 KW PTO to 168 KW and were designed to be used for
6035-649: The visual arts, literature , film, theater , comedy (especially improvisational comedy ), food , dance, and music (particularly jazz , blues , soul , hip-hop , gospel , and electronic dance music , including house music ). Chicago is home to the Chicago Symphony Orchestra and the Lyric Opera of Chicago , while the Art Institute of Chicago provides an influential visual arts museum and art school . The Chicago area also hosts
6120-664: The waterfront. Landfill extends into portions of the lake providing space for Navy Pier , Northerly Island , the Museum Campus , and large portions of the McCormick Place Convention Center. Most of the city's high-rise commercial and residential buildings are close to the waterfront. An informal name for the entire Chicago metropolitan area is "Chicagoland", which generally means the city and all its suburbs, though different organizations have slightly different definitions. Major sections of
6205-530: The world today. Glidden and Isaac L. Ellwood (1833–1910) manufactured barbed wire in DeKalb, initially as the Barb Fence Company. Successor companies included the 1881 Superior Barbed Wire Company, which merged into American Steel and Wire in 1898 and finally became United States Steel. Between 1892 and 1898 Glidden and Ellwood played substantial parts in establishing the state teachers college that became Northern Illinois University. DeKalb played
6290-539: The world's first skyscraper in 1885, using steel-skeleton construction. The city grew significantly in size and population by incorporating many neighboring townships between 1851 and 1920, with the largest annexation happening in 1889, with five townships joining the city, including the Hyde Park Township , which now comprises most of the South Side of Chicago and the far southeast of Chicago, and
6375-431: Was John H. Rauch, M.D. Rauch established a plan for Chicago's park system in 1866. He created Lincoln Park by closing a cemetery filled with shallow graves, and in 1867, in response to an outbreak of cholera he helped establish a new Chicago Board of Health. Ten years later, he became the secretary and then the president of the first Illinois State Board of Health, which carried out most of its activities in Chicago. In
6460-410: Was 25.1 years. For every 100 females, there were 97.5 males. For every 100 females age 18 and over, there were 99.8 males. The median income for a household in the city was $ 44,223, and the median income for a family was $ 67,155. Males had a median income of $ 32,306 versus $ 17,703 for females. The per capita income for the city was $ 24,819. About 17.8% of families and 26.4% of the population were below
6545-616: Was built in 1891. The Union Pacific Railroad took control of the line in 1995. Since 2006, the nearest passenger rail service is at the Metra commuter system station in Elburn , 15 miles (24 km) east of DeKalb, which is accessible by bus. In January 2023, the Dekalb City Council voted to fund a transportation study aimed at determining feasibility of extending Metra Union Pacific West Line commuter rail service from Elburn to
6630-472: Was called the Society for Human Rights . It produced the first American publication for homosexuals, Friendship and Freedom . Police and political pressure caused the organization to disband. The Great Depression brought unprecedented suffering to Chicago, in no small part due to the city's heavy reliance on heavy industry. Notably, industrial areas on the south side and neighborhoods lining both branches of
6715-412: Was established through DeKalb in 1913. The first "seedling mile" of concrete pavement was built in 1914 at Malta , six miles west of DeKalb. The rest of Lincoln Highway across DeKalb County was paved in 1920. The highway is now part of Illinois Route 38 . The main north-south highway through DeKalb is Illinois Route 23 , which forms an unusual intersection of two state highways and a major railroad at
6800-462: Was founded in 1837, most of the early building was around the mouth of the Chicago River, as can be seen on a map of the city's original 58 blocks. The overall grade of the city's central, built-up areas is relatively consistent with the natural flatness of its overall natural geography, generally exhibiting only slight differentiation otherwise. The average land elevation is 579 ft (176.5 m) above sea level . While measurements vary somewhat,
6885-578: Was held in a purpose-built auditorium called the Wigwam . He defeated Douglas in the general election, and this set the stage for the American Civil War . To accommodate rapid population growth and demand for better sanitation, the city improved its infrastructure. In February 1856, Chicago's Common Council approved Chesbrough 's plan to build the United States' first comprehensive sewerage system. The project raised much of central Chicago to
6970-533: Was incorporated on Saturday, March 4, 1837, and for several decades was the world's fastest-growing city. As the site of the Chicago Portage , the city became an important transportation hub between the eastern and western United States. Chicago's first railway, Galena and Chicago Union Railroad , and the Illinois and Michigan Canal opened in 1848. The canal allowed steamboats and sailing ships on
7055-457: Was organized in 1844. Beginning in 1846, a stage coach traveled from Chicago through DeKalb and Dixon to Galena. A post office has been in operation at DeKalb since 1849. The first railroad reached DeKalb in 1853. Barbed wire was a key product in DeKalb's history. Joseph Glidden (1813–1906), a DeKalb resident since about 1850, received a patent in 1874 for inventing the conventional double-strand barbed wire that remains in common use around
7140-461: Was repealed. The 1920s saw gangsters , including Al Capone , Dion O'Banion , Bugs Moran and Tony Accardo battle law enforcement and each other on the streets of Chicago during the Prohibition era . Chicago was the location of the infamous St. Valentine's Day Massacre in 1929, when Al Capone sent men to gun down members of a rival gang, North Side, led by Bugs Moran. From 1920 to 1921,
7225-477: Was resolved by 1933, and at the same time, federal relief funding began to flow into Chicago. Chicago was also a hotbed of labor activism, with Unemployed Councils contributing heavily in the early depression to create solidarity for the poor and demand relief; these organizations were created by socialist and communist groups. By 1935 the Workers Alliance of America begun organizing the poor, workers,
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