On December 3, 1818, Illinois became the 21st U.S. state. Early U.S. expansion began in the south part of the state and quickly spread northward, driving out the native residents. In 1832, …

2 days ago · Geographical and historical treatment of Illinois, including maps and a survey of its people, economy, and government. Its capital city is Springfield, and its largest city and most …

Nov 9, 2009 · After the American Revolution, Illinois became a territory of the United States and achieved statehood in 1818. Located on Lake Michigan, and connected to the eastern ports …

Though independent of the State of Illinois and the Historical Library since 1997, the Illinois State Historical Society continues to actively promote the study of Illinois history.

Illinois is the leading export state in the nation for 1966. 1967 — JANUARY 26–27 — The largest single snowstorm in Chicago history dumps 23 inches on the city in 29 hours.

Timeline of important dates and major events in the history of Illinois. Illustrated list of events and people from our today in history archives.

Discover the history, stories and people of Illinois. Visit historic sites, meet American presidents and tour a prehistoric city.

European exploration began in the late 17th century with French explorers, but following conflicts and territorial changes, Illinois became part of the United States after the American Revolution.

Dec 15, 2025 · Illinois, known as the “Land of Lincoln,” boasts a rich history that dates back thousands of years. From its early Native American inhabitants to its role in the development …

Jacques Marquette and Louis Jolliet, a missionary and a fur trader, become the first Europeans to explore Illinois. Following the course of the Mississippi River, they head south and encounter …