1861 in the United States

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Events from the year 1861 in the United States.

This year marked the beginning of the American Civil War.

Map of the secession crisis of 1860 to 1861
March 4: Abraham Lincoln becomes the 16th U.S. president
Hannibal Hamlin becomes the 15th U.S. vice president
April 12–14: Battle of Fort Sumter , the beginning of the American Civil War
July 21: Confederate victory at the First Battle of Bull Run