Some flag facts about the flag of Texas:

Known as the Lone Star Flag and contributing to Texas’ nickname as ‘The Lone Star State’
Blue represents loyalty, white represents purity, and red represents bravery
The Texas Flag Code states that the single star represents “All of Texas and stands for our unity as one for God, State, and Country”
The ‘Lone Star’ predates the Texas flag and was used as a symbol of Texas’ solidarity in declaring independence from Mexico
The Lone Star is still seen today as a symbol of Texas’ independent spirit
Originally adopted on January 25, 1839 and officially on August 31, 1933
Ranked 2nd best in design quality out of 72 North American flags in a 2001 NAVA survey