George Washington was a politician.
Constitutional Convention (United States) . The delegates elected George Washington to preside over the Convention . George Washington . He served as Commander-in-Chief of the Continental Army during the American Revolutionary War , and later presided over the 1787 convention that drafted the United States Constitution . Mr. President (title) . Adopted in the 1790s by George Washington , the first President of the United States , as his official manner of address as head of state , `` Mister President '' has subsequently been used by other governments to refer to their heads of state .