The Texas State Flag, with red and white bars and a lone white star on a field of blue, is the only state flag in America which may properly be flown alongside and at the same height with the flag of United States of America. The reason is that Texas is the only state which was a soverign independent nation before it joined the Union, and the flag was the flag of the Republic of Texas, before it became the State of Texas.
This was the second flag for the Republic of Texas and was adapted Jan. 24, 1839. In 1845, when Texas became the 28th state, the flag of the Republic became the State Flag. It is the fourth of six national flags that have been flown over the territory that is now the State of Texas.
In the Flag the Blue stands for loyalty, the white is for strength, and the red for bravery or valor. The Lone Star stands for Texas, and is the reason it is known as "The Lone Star State."