Texas Timeline 1519-1900 Concepts of Social Studies By TheCoov 1519 Tejas' coast is mapped for the first time 1820 Mexico gets its independence from Spain, and Austin colonizes Tejas Apr 6, 1830 Mexico bans immigration into Tejas Aug 2, 1835 Texas Revolution begins Mar 2, 1836 Texas declares independence from Mexico Mar 6, 1836 Fall of the Alamo Apr 21, 1836 The battle of San Jacinto Sep 1, 1836 The Republic of Texas is formed Jan 1, 1839 Austin is named the capitol of Texas Feb 19, 1846 Texas is annexed to the United States May 8, 1846 The beginning of the Mexican American war Feb 8, 1848 The treaty of Guadalupe Hidalgo 1860 Texas joins the confederacy Feb 15, 1876 Present Texas constitution is adopted 1900 Oil is discovered