Final answer:
Abraham Lincoln was the president who was assassinated at Ford's Theater in Washington D.C.
Step-by-step explanation:
The president who was assassinated while attending a play at Ford's Theater in Washington D.C. was Abraham Lincoln. On April 14, 1865, John Wilkes Booth, a Confederate sympathizer, shot Lincoln in the head while he was watching the play 'Our American Cousin'. Lincoln was the 16th president of the United States and his assassination was a significant event in American history.
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