For 10 points, name this state which has been ruled by itself, France, Spain, the Confederacy and Mexico, as well as the United States.
This entity once claimed the territory of Chamizal, and it ceded the Horcon Tract around the city of Rio Rico to its southern neighbor in 1970. The city of New Braunfels was founded here as part of Adelsverein, a failed attempt to create a German colony in the 1840s and a Karankawa raid doomed Robert De La Salle's attempt to colonize this in the 1680s. The shipwreck of the Narvaez expedition and Cabeza de Vaca eventually led to the colonization of this region, and the Battle of Goliad was part of the conflict in which it became an independent republic with capital at ► Washington-on-the-Bravos. For 10 points, name this state which has been ruled by itself, France, Spain, the Confederacy and Mexico, as well as the United States.
This entity once claimed the territory of Chamizal, and it ceded the Horcon Tract around the city of Rio Rico to its southern neighbor in 1970.
Texas [prompt on United States until "New Braufels" is read]