1. San Jacinto Day: April 25th is known as San Jacinto Day in Texas, which commemorates the decisive battle of the Texas Revolution. On this day in 1836, Texan forces, led by General Sam Houston, defeated Mexican forces under General Antonio López de Santa Anna. This victory led to the independence of Texas from Mexico and marked the end of the 18-month-long Texas Revolution.

2. Texas Independence: On April 21, 1836, the Texan army won the Battle of San Jacinto, but it was not until April 25th that General Santa Anna was captured and forced to sign the Treaty of Velasco. This treaty recognized the independence of the Republic of Texas from Mexico.

3. Texas Flag Day: April 25th is also recognized as Texas Flag Day, which commemorates the adoption of the Lone Star Flag by the Congress of the Republic of Texas on this day in 1836. The flag, which features a single white star on a blue background and a red and white stripe, symbolizes Texas' struggle for independence.

4. Confederate Memorial Day: In some parts of Texas, April 25th is celebrated as Confederate Memorial Day, which honors the soldiers who fought and died for the Confederate States of America during the Civil War.

5. Austin's Birthday: April 25th also marks the birthday of Stephen F. Austin, who is considered the "Father of Texas." Austin played a crucial role in bringing settlers to Texas and establishing the first Anglo-American colony in the region. Despite his efforts, Austin did not live to see Texas gain its independence from Mexico, as he died on December 27, 1836.