American History By teknologi Period: Aug 23, 1492 to Aug 23, 1607 The time of European exploration Aug 23, 1763 England achieved dominance Period: Aug 23, 1770 to Aug 23, 1789 The revolutionary period Aug 23, 1776 The decleration of independence Aug 23, 1787 The constitution Aug 23, 1789 George Washington President Period: Aug 23, 1789 to Aug 23, 1828 The early national period Aug 23, 1791 The Bill of Rights Period: Aug 23, 1861 to Aug 23, 1865 The civil war Aug 23, 1879 caste system railroad strikes Aug 23, 1914 World war I Aug 23, 1917 USA remained neutral until Aug 23, 1920 world's largest economy Period: Aug 23, 1939 to Aug 23, 1945 world war II Period: Aug 23, 1941 to Aug 23, 1991 capitalists society Period: Aug 23, 1991 to Aug 23, 2012 participated in many wars Aug 23, 2001 world trade center Aug 23, 2012 weakend economy