Final answer:
Abraham Lincoln attended the play Our American Cousin the night he was shot.
Step-by-step explanation:
The play that Abraham Lincoln attended the night he was shot was Our American Cousin. It was a comedic play written by English playwright Tom Taylor. On April 14, 1865, Lincoln attended a performance of this play at Ford's Theatre in Washington, D.C. where he was assassinated by John Wilkes Booth.
Learn more about Lincoln's assassination