1776 1776-83 1781 17871803 1812-141820 1830 18451846-48 1850185418571861-65 Chapter 6.Manifest Destiny Chronological Landmarks 6.1 The Louisiana Purchase (1803) 6.2 The War of1812(1812-1814) 6.3 The Missouri Compromise (1820) 6.4 The Monroe Doctrine (1823) 6.5 The Indian Removal Act (1830) 6.6 Transcendentalism (1836) 6.7 The Annexation of Texas (1845)Chapter 6. Manifest Destiny Chronological Landmarks 6.1 The Louisiana Purchase (1803) 6.2 The War of 1812 (1812–1814) 6.3 The Missouri Compromise (1820) 6.4 The Monroe Doctrine (1823) 6.5 The Indian Removal Act (1830) 6.6 Transcendentalism (1836) 6.7 The Annexation of Texas (1845)