The American Revolution By BobbyApple Jun 19, 1754 The Albany Congress June 19-July 11 Period: Jun 19, 1754 to Jun 21, 1788 American Revolution May 29, 1765 Patrick Henry's "If this be treason, make the most of it!" speech Jun 9, 1772 The Gaspee Affair May 20, 1774 Massachusetts Government Act, one of the "Intolerable Acts" Jun 18, 1778 British abandon Philadelphia and return to New York Jun 21, 1788 U.S. Constitution adopted, when New Hampshire ratifies it