Pennsylvania Becomes 2nd State
On December 12, 1787, Pennsylvania was the second state to ratify the Constitution and be admitted to the Union.
Revolutionary War
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Completion of Washington Monument
On December 6, 1884, the Washington Monument was completed, 36 years after its cornerstone was laid.
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Benedict Arnold Commits Treason
On September 21, 1780, American Revolutionary War General Benedict Arnold met with the British as part of a plan to hand over West Point – an act of treason.
