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Cambridge Modern History Secession Map

This map differentiates between states and territories that remained a part of the Union during the Civil War and those that seceded, both before and after the onset of war.

The map key delineates between states that seceded before and after "the outbreak of war." Confederate troops had bombarded Charleston's Fort Sumpter on April 12, 1861, marking the official beginning of the Civil War.

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Map showing the United States during the Civil War, with color coding delineating between states that remained with the Union and those that seceded.
Citation (Chicago Style): 

"The United States The Secession." From the Cambridge Modern History Atlas, 1912. University of Texas at Austin.

Usage Statement: 

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