This article is about the history of Chicago, Illinois, United States. The city was founded by European Americans in the 19th century in 1832. The Chicago area's recorded history begins with the arrival of French explorers, missionaries and fur traders in the late 17th century. The territory was claimed by the United States in the late 18th century, at which time the area was inhabited by the Potawatomi. The area had been inhabited for thousands of years by varying cultures of indigenous peoples.
Four historical events are commemorated by the four red stars on Chicago's flag: The United States' Fort Dearborn, established at the mouth of the Chicago River in 1803; the Great Chicago Fire of 1871, which destroyed much of the city; the World Columbian Exposition of 1893, by which Chicago celebrated its recovery from the fire; and the Century of Progress World's Fair of 1933–1934, which celebrated the city's centennial. The flag's two blue stripes symbolize the north and south branches of the Chicago River, which flows through the city's downtown and neighborhoods.