Mexico gave up its claims to California as a result of the Mexican War.
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California was acquired from Mexico at the end of the Mexican-American War (1846-1848). Since then, southern California has been part of the US-Mexico Border.
In 1821, California became a part of Mexico after gaining independence from Spain.
No, it's part of Mexico not California. I say that because it's right beside Baja California (which is part of Mexico), and also the Gulf of California is right beside Mexico.
No, as a matter of fact, part of US, Texas, Arizona, New Mexico and California (Alta California) were part of Mexico.
California was part of mexico in the 1840's
No, California was part of Mexico until the ratification of the Treaty of Guadalupe Hidalgo in 1848.
Yes. At the time, California was part of Mexico.
The Gulf of California separates the Baja California Peninsula from most of the rest of Mexico. Note that the peninsula is NOT part of the US state of California. It is part of Mexico.
California was part of Mexico in the 1840's
Trough the spoils of war. See related questions.