| Date Admitted: | Dec. 3, 1818 | | State Capital: | Springfield |
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| Admission to U.S.: | Twenty-first State |
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| Flag Adopted: | 1915 |
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| State Motto: | "State Sovereignty, National Union" |
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| Nickname: | Land of Lincoln |
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| State Song: | "Illinois" |
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| State Flower: | Native Violet |
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| State Tree: | White Oak |
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| State Bird: | Cardinal |
| State Fish: | Bluegill |
| State Animal: | White-tailed Deer |
| State Insect: | Monarch Butterfly |
| State Fossil: | Tully Monster |
| State Mineral: | Flourite |
| State Grass: | Big Bluestem |
| State Dance: | Square Dance |
| State Seal: |  |
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