1. On March 19, 1836, the Battle of Coleto Creek began. This battle was a key event in the Texas Revolution, as it would ultimately lead to the execution of over 300 Texan soldiers by Mexican forces at Goliad less than two weeks later.

2. March 19, 1861 saw the secession of Texas from the United States, making it the seventh state to leave the Union and join the Confederacy. This decision ultimately led to the state's involvement in the American Civil War.

3. On March 19, 1891, Texas A&M University was founded as the Agricultural and Mechanical College of Texas. The school has since become one of the largest universities in the state and is known for its strong engineering and agricultural programs.

4. The city of El Paso was officially incorporated on March 19, 1873. Located in West Texas, El Paso is the fifth largest city in the state and a major gateway to both Mexico and the United States.

5. March 19, 2003 marked the beginning of the Iraq War, which would have a significant impact on Texas as it sent many of its soldiers overseas to fight in the conflict. The war officially ended in December 2011.