Settlement & Growth of United States By ayalamiguel 1767 Daniel Boone explores Kentucky for the first time 1803 Louisiana Purchase 1805 Lewis and Clark reach the Pacific Ocean 1831 telegraph 1836 Battle of the Alamo 1838 Trail of Tears 1841 Oregon Trail 1845 Manifest Destiny 1846 The Mexican-American War 1848 Gold Rush begins 1848 The Mexican-American War ends 1862 Homestead Act 1867 pony express 1874 Black Hills Gold 1890 The U.S. Government announces that the Western lands have been explored. 1902 radio
