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The Constitution and the Union
| Roots of the Slavery Crisis
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Speech on the Kansas-Nebraska Act
| Crisis of Constitutionalism
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A House Divided
| Crisis of Constitutionalism
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Reply in the Senate to William Seward
| Secession and Civil War
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Cornerstone Speech
| Secession and Civil War
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First Inaugural Address
| Secession and Civil War
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The Study of Administration
| Progressive Rejection of the Founding