Annexation Texas By Jeanetta Carson Mar 2, 1836 Texas Independence Texas Declares Independence From Mexico Apr 21, 1836 Battle Of Jacinto Texas Defeated Mexico 1837 U.S. Reconize Texas U. S. Reconize the Republic If Texas Aug 4, 1837 Texas Offers annexation Texas makes a formal offer of annexation to the United States 1838 John Quincy Adams Oct 12, 1838 Texas withdraw offer of annexation Jan 23, 1839 Texas Congree appoves withdraw proposal annexation Jun 15, 1843 Sam Houston Army Armistice between Mexico and Texas Mar 1, 1845 President Tyler signes annexation Resolution Jul 4, 1845 Texas accepts offer of United States Annexation Dec 29, 1945 Texas Officially 28th State