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 Illinois State 
| Nick Name: | Prairie State |  | Capital City: | Springfield |  | Largest Cities: | Chicago,Peoria,Rockford |  | Highest Point: | Charles Mound(1,235 ft ; 376 m) |  | Lowest Point: | Confluence of Mississippi River and Ohio River (280 ft ;  85 m) |  | Bird: | Northern Cardinal(Cardinalis cardinalis) |  | Flower: | Violet(Viola) |  | Tree: | White Oak (Quercus alba) |  
| Constitution: | 21st State |  
| Admission to Statehood: | December 3, 1818 |  
| Motto: | State Sovereignty, National Union |  
| Flag: |   |  |  |