United States President Abraham Lincoln was assassinated by John Wilkes Booth on Good Friday, April 14, 1865, while attending the play Our American Cousin at Ford's Theater as the American Civil War was drawing to a close. The assassination occurred five days after the commander of the Confederate Army of Northern Virginia, General Robert E. Lee, surrendered to Lieutenant General Ulysses S. Grant and the Union Army of the Potomac.

Lincoln was the first American president to be assassinated. An unsuccessful attempt had been made on Andrew Jackson 30 years before in 1835, and Lincoln had himself been the subject of an earlier assassination attempt by an unknown assailant in August 1864. The assassination of Lincoln was planned and carried out by the well-known stage actor John Wilkes Booth, as part of a larger conspiracy in a bid to revive the Confederate cause.

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