8. French Rule Louis Jolliet and Jacques Marquette were the first explorers to reach Chicago. La Salle built a fort near Peoria. Jolliet Marquette La Salle
10. The Road to Statehood 1787- Illinois was a part of the Northwest Territory. 1800- Illinois was a part of the Indiana Territory. 1700s- Chicago was settled. December 3, 1818- Illinois became the 21st state in the United States.
12. Chicago Chicago began growing from 1840 to 1860. Ships reached Chicago through Lake Michigan. In 1865, Chicago became the world’s leading railroad center.