Those territories were acquired from Mexico, first during the Mexican-American War (1846-1848) and then the southern parts of both states during the Gadsden Purchase (1853).
From Mexico after the Mexican American War under the Treaty of Guadalupe Hidalgo.
The states of Arizona, California, New Mexico and Nevada were won during the Mexican-American war. The war was fought from 1846 till 1848.
Texas, California, New Mexico and Arizona
California, Nevada, Arizona, Utah, Wyoming, Colorado, and New Mexico.
Mexico. The land (in present-day Arizona and New Mexico) was purchased from Mexico soon after the Mexican-American War, which gave the US present-day California, Nevada, Arizona, New Mexico, Colorado, and parts of Wyoming.
The Mexican cession, most of the south west. New Mexico, Arizona, California, Utah, Nevada, colorodo.
Mexico.
Arizona, Texas, New Mexico, California
California, New Mexico, Texas, and Arizona
The present US States of California, Nevada, Utah, New Mexico and Arizona.
Arizona, California, Nevada, Utah and New Mexico. The Gadsden Purchase completed the southern borders of Arizona and New Mexico.
Texas freed itself before it was annexed. The rest are New Mexico, Arizona, California, Nevada, Colorado, and Utah.
Four - Texas, New Mexico, Arizona, California
California, Arizona, New Mexico, and Texas.California, Arizona, New Mexico, Texas
Arizona and New Mexico are bordered by Mexico to the south.
California, Nevada, Arizona, Utah, Wyoming, Colorado, and New Mexico.
The states conquered where California, Nevada, Arizona New Mexico, and Colorado. all formerly owned by Mexico.
The states conquered where California, Nevada, Arizona New Mexico, and Colorado. all formerly owned by Mexico.