1. In 1845, Texas became the 28th state in the United States on February 28th. This historic event marked the end of Texas' time as an independent republic and its entry into the Union as a state.

2. On February 28, 1911, the first airplane flight in Texas was made by a man named A. Roy Knabenshue. The flight took place in San Antonio and lasted for 10 minutes, marking a significant milestone in aviation history.

3. February 28th is also Texas Independence Day, a holiday that commemorates the signing of the Texas Declaration of Independence on March 2, 1836. This day signifies the start of Texas' struggle for independence from Mexico.

4. On February 28, 1927, the Texas School Book Depository was established in Dallas, which later played a pivotal role in the assassination of President John F. Kennedy on November 22, 1963.

5. In 1948, on February 28th, the Supreme Court of Texas ruled in favor of H.eman Marion Sweatt, a black student who had been denied admission to the University of Texas School of Law due to segregation policies. This landmark decision paved the way for the integration of public schools and universities in Texas.