The US and Mexico, 1800s By runnellsje0530 Jan 1, 1821 Mexican Independence Won from Spain. End of the Mexican Independence War. Jun 29, 1821 Stephen Austin Settles in Texas Brought about 300 others. Jan 1, 1836 Texas Declares Independence from Spain Period: Feb 23, 1836 to Mar 6, 1836 Battle of the Alamo YEEEHAW Apr 21, 1836 Battle of San Jacinto Texas Wins Independence! Jan 1, 1845 Texas Annexation Period: Apr 25, 1846 to Feb 2, 1848 Mexican-American War Feb 2, 1848 Treaty of Quadalupe Hidalgo Dec 30, 1853 Gadsden Purchase New Mexica/Arizona Area sold to the US from Mexico.
