In 1807, former vice president Aaron Burr was indicted for treason.

In 1872, President Ulysses S. Grant signed the Amnesty Act into law, restoring full rights to nearly all Confederate sympathizers.

In 1947, President Harry Truman signed the Truman Doctrine, appropriating military and economic aid for Greece and Turkey to combat the spread of communism.

In 2017, a bomb exploded at Manchester Arena following an Ariana Grande concert, killing 23 people.

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