Oregon. New Mexico was part of Mexico until 1848 and Idaho was part of Oregon until 1846.
No, California was part of Mexico until the ratification of the Treaty of Guadalupe Hidalgo in 1848.
Until 1848, when the treaty of Guadalupe-Hidalgo was signed.
Yes, it used to be part of Mexico until the Mexican-American War (1846-1848)
Officially, from 1821 when it was part of Mexico after its war of independence against Spain (1810-1821), until 1848 when Mexico was forced to let it go to the United States after the Mexican-American War (1846-1848).
Arizona was a part of Mexico until the 1848 Treaty of Guadalupe Hidalgo which ended the Mexican American War.
The southwest was part of Mexico from 1821 until 1848; the cowboy culture is of Mexican origin; the Tex-Mex food is also of Mexican origin.
It was 1848.
Arizona was formed from land that the US obtained from Mexico after the Mexican American War.
California was part of mexico in the 1840's
During that year, the Mexican-American War (1846-1848) began. It was not until 1848 that Mexico had to cede the US Southwest.
It never did; it has been an independent country since 1821 when it won its war of independence against Spain.There is a state known as New Mexico, which was part of Mexico from 1821 until 1848, when it had to be ceded to the United States due to the Mexican American War (1846-1848).