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Subject
- United States. Congress[remove]69
- Politics and government60
- African American history48
- Statehood (American politics)36
- Missouri compromise25
- Constitutions20
- U.S. states19
- Law15
- Presidents14
- Slavery12
- Powers and duties6
- Sumner, Charles, 1811-18746
- Douglas, Stephen A. (Stephen Arnold), 1813-18615
- Extension to the territories5
- Lincoln, Abraham, 1809-18655
- Buchanan, James, 1791-18684
- Constitutional law4
- Governors4
- History4
- Lane, James Henry, 1814-18664