sentences:  On February 1, 1861, a special convention in Texas adopted an ordinance of secession repealing the ordinance of annexation and seceding from the United States (by 95% vote, 166 to 8), and on February 7, the Legislature ordered a public referendum to be held on the ordinance under the direction of the convention.On February 23, 1861, citizens of Texas voted overwhelmingly to secede from the United States, by 75% as 46,153 to 14,747.During the American Civil War, Texas was invaded by Union troops many times including the final major clash of the war which was the Battle of Palmito Ranch, on May 12–13, 1865.