Chicago is the county seat of Cook County, the second-most populous county in the United States, and the principal city of the Chicago metropolitan area, which is often referred to as “Chicagoland.” The Chicago metropolitan area, at nearly 10 million people, is the third-largest in the United States, the fourth largest in North America, and the third
The city has grown 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 the Jefferson Township, which now makes up most of Chicago’s Northwest Side.
The city has major financial and futures exchanges, including the Chicago Stock Exchange, the Chicago Board Options Exchange, and the Chicago Mercantile Exchange, which is owned, along with the Chicago Board of Trade by Chicago’s CME Group.
Chicago has several other contemporary and jazz dance troupes, such as the Hubbard Street Dance Chicago and Chicago Dance Crash.
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