By the treaty of Guadalupe Hidalgo, negotiated in 1848, at the close of the war with Mexico, Nevada became United States territory.
The mountains of the Basin Range region, known in Texas as the Trans-Pecos Province, rise in Guadalupe Peak near the border of New Mexico, to nearly 9000 ft.
The Red, the Brazos, the Colorado, the Guadalupe, and the Nueces rise on the E.
The varied fauna and flora of Texas may be classified in the following life-zones: the Canadian zone, on the highest parts of the Davis Mountains; the Transition zone, including high parts of the Davis, Chisos and Guadalupe mountains; the Upper Austral zone, Upper Sonoran division, in the Panhandle, E.
The war terminated in the treaty of Guadalupe Hidalgo (February 2, 1848)1848) by which Mexico accepted the Rio Grande boundary.