EOC Timeline By the coolist luke May 3, 1519 Pineda mapped the coast of Texas Januray 1st isn't the exact date, but we know it was sometime in that year. Mar 31, 1718 The San Antonio Misson was Founded There is no excact date on this either. May 24, 1803 Luisiana Purchase May 24, 1821 Mexico Won Their Independace from Spain May 24, 1836 The Convention of 1836 May 24, 1845 Texas was Annexed to the U.S. May 24, 1860 Civil War Begins May 24, 1865 Civil War Ends May 24, 1901 Oil Discovery in Spindletop