  the history of chicago, illinois, has played a central role in american economic, social, cultural and political history and since the 1850s has been the dominant midwest metropolis. the area's recorded history begins with the arrival of french explorers, missionaries and fur traders in the late 17th century and their interaction with the local potawatomi indians. there were small settlements and a u.s. army fort, but the soldiers and settlers were all driven off in 1812. the modern city was founded in 1833 by yankee businessmen and grew rapidly from real estate speculation and the realization that it had a commanding position in the emerging inland transportation network, based on lake traffic and railroads, controlling access from the great lakes into the mississippi river basin. despite a fire in 1871 that destroyed the central business district, the city grew exponentially, becoming the nation's rail center and a the dominant midwestern center for manufacturing, commerce, finance, higher education, religion, broadcasting, sports, jazz, and high culture. the city was a magnet for european immigrantsâat first germans, irish and scandinavians, then in the 1890s to 1914, jews, poles and italians. they were all absorbed in the city's powerful ward-based political machines. many joined militant labor unions, and chicago became notorious for its violent strikes, and high wages. the blacks migrated from the south in large numbers starting in the world war i era. mexicans started arriving after 1910, and puerto ricans after 1945. the cook county suburbs grew rapidly after 1945, but the democratic party machine kept both the city and suburbs under control, especially under mayor richard j. daley, who was chairman of the cook county democratic party. deindustrialization after 1970 closed the stockyards and most of the steel mills and factories, but the city retained its role as a financial and transportation hub. increasingly it emphasized its service roles in medicine, higher education and tourism. the city formed the political base for national leaders of the democratic party, especially stephen a. douglas in the 1850s, adlai stevenson in the 1950s, and barack obama in recent years. ==historic overview==  ==early native settlements== at its first appearance in records by explorers, the chicago area was inhabited by a number of algonquian peoples, including the mascouten and miami. the name "chicago" is the french version of the miami-illinois word shikaakwa ("stinky onion"), n
History_of_Chicago,_Illinois