Question: what are some important events in illinois history?
Answer: 1673. Marquette and Jolliet descend the Mississippi, return to Wisconsin via Illinois River and Lake Michigan.
1675. Marquette founds mission near Starved Rock.
1680. La Salle builds fort Crevecoeur near Peoria.
1682. La Salle erects Fort St. ... 
1691-92. ... 
1699. ... 
1717. ... 
1720.