The unity of the United States was threatened by rivalries over issues such as

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The defense of state interests and the issue of slavery were major sources of tension that threatened the unity of the United States prior to the Civil War. The conflict over states' rights regarding issues such as tariffs, nullification, and the expansion of slavery into new territories all fueled the divide between North and South. These issues ultimately culminated in the secession of Southern states and the formation of the Confederacy, leading to the Civil War. Women's suffrage did not become a major national issue until after the Civil War.

The Unity of the United States Was Threatened by Rivalries