Final answer:
The person being referred to is President Abraham Lincoln, who was assassinated shortly after the end of the Civil War.
Step-by-step explanation:
The individual who was shot on April 14 and subsequently died on April 15, shortly after the Civil War ended on April 9, is none other than President Abraham Lincoln. Abraham Lincoln was attending a play at Ford's Theatre in Washington, D.C., when he was shot by John Wilkes Booth, a Southern sympathizer. After being shifted to a house across the street, he succumbed to his injuries the following day.
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