1820 - The Venus de Milo is discovered on the island of Melos.

1819.....May 22 - The SS Savannah leaves port at Savannah, Georgia on a voyage to become the first steamship to cross the Atlantic Ocean. The ship will arrive at Liverpool, England on June 20.

1818 - April 4 - The U.S. Congress adopts the flag of the United States as having 13 red and white stripes and one star for each state (20 stars) with additional stars to be added whenever a new state is added to the Union.

1817: May - The General Convention of the Episcopal Church founded General Theological Seminary while meeting in New York City.