Final Timeline Project Gabrielle DeSena By gtdesena Period: Jan 1, 999 to Jan 1, 1870 20 Most Important Events In American History 1000 Leif Erikson Arrives in North America 1492 Columbus Arrives in North America 1521 Cortes and the Conquistadors 1600 Age of Exploration- North America European Settlement 1607 Jamestown Colony Founded Mar 5, 1770 Boston Massacre Aug 2, 1776 Declaration of Independence Signed Jan 17, 1777 British Surrender 1787 Constitution written 1790 Development of the Two-Party System 1790 Enlightenment 1790 Industrial Revolution 1803 Louisiana Purchase 1812 War of 1812 1830 Westward Expansion and Trail of Tears 1845 Mexican-American War and the Annexation of Texas Jul 19, 1848 Seneca Falls Convention 1850 Abolitionism and Antebellum Reform Apr 12, 1861 Civil War Begins May 9, 1865 Civil War Ends
