Editing Republic of Texas (section)

==Borders==
The Republic of Texas claimed borders based upon the Treaties of Velasco between the newly created Republic of Texas and General [[Antonio López de Santa Anna]]. The eastern boundary had been defined by the [[Adams–Onís Treaty]] of 1819 between the United States and the [[Spanish Empire]], which recognized the [[Sabine River (Texas–Louisiana)|Sabine River]] as the eastern boundary of [[Spanish Texas]] and western boundary of the [[Missouri Territory]].

Under that treaty, the United States had renounced its claim to Spanish land to the east of the [[Rocky Mountains]] and to the north of the [[Rio Grande]], which it claimed to have acquired as part of the [[Louisiana Purchase]] of 1803.

The southern and western boundary of the Republic of Texas with Mexico was disputed throughout the republic's existence, since Mexico refused to acknowledge the independence of Texas. Texas claimed the [[Rio Grande]] as its southern boundary, while Mexico insisted that the [[Nueces River]] was the boundary. In practice, much of the disputed territory was [[Comancheria|occupied by the Comanche people]] and outside the control of either state. Texian claims included the eastern portions of [[Santa Fe de Nuevo México#Mexican territory|New Mexico]], which was administered by Mexico throughout this period.