George Washington was not the 1st president of the United States.
The United States was established on July 4, 1776. George Washington was inaugurated president thirteen years later, on April 30, 1789. During the intervening years, the Second Continental Congress in Philadelphia drew up the Articles of Confederation (the first American constitution). In 1781, Maryland representative John Hanson was elected the first president of the Congress of the Confederation. His official title was "president of the United States in Congress Assembled." After Hanson, seven other men served as president: Elias Boudinot, Thomas Mifflin, Richard Henry Lee, John Hancock, Nathaniel Gorham, Arthur St. Clair, and Cyrus Griffin. in 1787, Congress held a constitutional convention. The delegates wrote the current constitution, ratified by he states in 1788. The following year, the ratifying states elected Washington our nation's ninth president (but the first president under the new constitution).