Original: Aide-de-camp to General George Washington during the American Revolutionary War , he was a leader of nationalist forces calling for a new Constitution ; he was one of America 's first Constitutional lawyers , and wrote most of the Federalist Papers , a primary source for Constitutional interpretation .
Simplified: Alexander Hamilton ( born January 11 , year unknown - probably 1755 or 1757 -- died July 12 , 1804 ) was the United States first Secretary of the Treasury , and was known for the creation of a national bank .