history of united states of america By JASHAN256 Oct 12, 1492 NORTH AMERICA DISCOVERED BY CHRISTOPHE COLOMBE Actually christophe colombe was searching india but he discovered american continent . 1620 Mayflower arrived in America 1638 First reservation Apr 7, 1775 Declaration of independence 1797 G.Washington 1830 Indians Removal Act "Trial of Tears 1844 Gold Rush 1860 Civil War