1800-1876 By preslie Turney 1803 Louisiana Purchase https://www.history.com/topics/westward-expansion/louisiana-purchase 1812 War Of 1812 https://www.history.com/topics/war-of-1812/war-of-1812 1820 Texas Declares Independence https://www.history.com/this-day-in-history/texas-declares-independence 1849 Gold Rush https://www.history.com/topics/westward-expansion/gold-rush-of-1849 1860 Abraham Lincoln elected president of the United States. https://www.history.com/this-day-in-history/abraham-lincoln-elected-president