The war between the states in the North and the states in the South is called the Civil War. The Civil War started in 1861. It ended in 1865. Southern states disagreed with the North over slavery and other issues. They did not want to be part of the United States. They formed their own country called the Confederate States of America, or the Confederacy. States in the North wanted to keep the United States together. They were the Union. The North won the war. The Confederacy became part of the United States again. The war between the North and the South is called the Civil War.
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