What were some accomplishments of alexander hamilton?

Alexander Hamilton became Washington's best aid during the Revolutionary War and was very trusted by him.
Alexander Hamilton also wrote most of the Federalist Papers, and he also became Secretary of Treasury. 
He also established the first National Bank!
~Hope I helped~
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He became George Washington's most able and trusted aid during the Revolutionary War. Hamilton joined the war at age eighteen. ... Hamilton wrote most of the Federalist Papers, which ensured ratification of the Constitution.

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