1. The Battle of Agua Dulce took place on March 13, 1836, during the Texas Revolution. A group of Texan rebels, led by Colonel James Fannin, fought against Mexican forces led by General Urrea. The Mexicans emerged victorious, and Fannin and his men were executed a few days later.

2. On March 13, 1865, Union Army General Gordon Granger arrived in Galveston and issued General Order No. 3, which declared that all slaves in Texas were free. This event is now celebrated as Juneteenth, a holiday commemorating the end of slavery in the United States.

3. The city of Lubbock, Texas, was founded on March 13, 1890. It was named after former Texas Ranger Thomas S. Lubbock, who died during the Civil War. Today, Lubbock is the 11th-largest city in Texas and a major center for agriculture, education, and healthcare.

4. March 13, 1929, was the day that the Texas Legislature created the Texas Highway Department, which later became the Texas Department of Transportation. The agency is responsible for building, maintaining, and overseeing the state's vast network of roads and highways.

5. On March 13, 1997, the North Texas tornado outbreak occurred, with multiple tornadoes touching down in the Dallas-Fort Worth area. The tornadoes caused severe damage and killed 10 people. It was one of the worst tornado outbreaks in Texas history.