) is the third-most populous city in the United States. It also has professional sports teams in each of the major professional leagues.
The first known reference to the site of the current city of Chicago as "Checagou" was by Robert de La Salle around 1679 in a memoir.
when we arrived at 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. In 1795, following the Northwest Indian War, an area that was to be part of Chicago was turned over to the United States for a military post by native tribes in accordance with the Treaty of Greenville.
In 1803, the United States Army built Fort Dearborn, which was destroyed in 1812 in the Battle of Fort Dearborn and later rebuilt.
The Ottawa, Ojibwe, and Potawatomi tribes had ceded additional land to the United States in the 1816 Treaty of St. The Potawatomi were forcibly removed from their land after the Treaty of Chicago in 1833.
Within seven years it grew to more than 4,000 people. The City of Chicago was incorporated on Saturday, March 4, 1837 and for several decades was the world's fastest growing city.