How did the growth of the united states threathen spains hold on texas?

Spain had claimed ownership of the territory in 1519, which comprised part of the present-day U.S. state of Texas, including the land north of the Medina and Nueces Rivers, but did not attempt to colonize the area until after locating evidence of the failed French colony of Fort Saint Louis in 1689. In 1690 Alonso de León escorted several Catholic missionaries to east Texas, where they established the first mission in Texas. When native tribes resisted the Spanish invasion of their homeland, the missionaries returned to Mexico, abandoning Texas for the next two decades.

Explanation:

the treaty of brest-litovsk was a peace treaty signed on 3 march 1918 between the new bolshevik government of russia and the central powers (german empire, austria-hungary, bulgaria, and the ottoman empire), that ended russia's participation in world war i.