War · 1861–1865
American Civil War
Fort Sumter, Charleston, South Carolina (where the war began)
After Abraham Lincoln, who opposed the expansion of slavery, won the 1860 election, Southern slave states seceded to form the Confederacy, and the war began when Confederate forces bombarded Fort Sumter on 12 April 1861. Lincoln's Emancipation Proclamation of 1 January 1863 declared more than 3.5 million enslaved people in Confederate territory free; General Robert E.
Lee surrendered at Appomattox Court House on 9 April 1865, and the Thirteenth Amendment banned slavery throughout the United States from December 1865.

Why it mattered
The deadliest war in US history, it left an estimated 700,000 soldiers dead, preserved the Union and freed four million African Americans from slavery.
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- American Civil War 12 April 1861 – 26 May 1865
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