I mean it was anexed by the US from Mexico. Darned fat thumbs.
I was just pointing out the Mexican claim was based on a short period of time.
You realize that Great Britain recognized TEXAS as an independent nation with the Rio Grande border, and tried to bring in Mexico, Canada, Texas, and GB against the USA over the Oregon Territories?
Suddenly the US realized the BACK DOOR WAS OPEN! Texas was so horrified at this attempted treaty they immediately plead for statehood. The USA agreed and then sent troops to the Rio Grande border, that GB had recognized as the border.
Then the Mexican Army began a bombardment of the Fort, killing a soldier named Brown. The Fort was then named Fort Brown and the town became Brownsville, TX.
GB backed off on the Oregon Territory problems, but there were atrocities there that are glossed over in the history books.