The city is located in the Midwest USA, in the state of Illinois. It is one of the three largest metropolitan areas in America (after New York and Los Angeles). Chicago has a population of over 2.6 million people. The city is spread out on the shores of Lake Michigan. It also has the Calumet and Chicago Rivers and a water canal that connects the Mississippi River to the Great Lakes.
From ancient times, Indian tribes have lived along the shores of Lake Michigan. After Europeans arrived on the continent in 1674, a missionary post was built on the site of present-day Chicago, which in 1803 became a defensive fort that repelled Indian attacks. As a separate settlement, Chicago was founded in 1833. It was then that it first appeared on the map of the United States. Four years later it received the status of a city.