The World Turned Upside Down By nagasparik Period: Jan 1, 1775 to Jan 1, 1783 The World Turned Upside Down Apr 19, 1775 Lexington and Concord (3) The events at Lexington and Concord were one of the most significant during the American Revolution, because the conflict was no longer a war of words but now a real war. Jul 4, 1776 Declaration of Independence