At one time california was claimed by mexico. true or false

The correct answer is - True.

California was part of Mexico until approximately century and a half ago. Mexico had much larger territory then what it has nowadays. The western, southwestern, and westernmost part of the Great Plains in what is now the United States, were all part of Mexico. It can easily been seen even nowadays that that was the case in the names of the settlements, rivers, mountains...

Mexico though had a territory that it was not powerful enough to control and protect once the Spanish power and support were gone. The United States, on the other side, had expansionist politics, it was a growing power, and once it saw a god opportunity it challenged Mexico. Mexico was not able to defend its territories and lost them, with the United States incorporation large portion of its territory.

Explanation:

Before the war, Texas was sparsely populated; there were more people living in New York City at the time than in the entire state of Texas. Most Texans lived on farms or ranches or in small towns, and only about 40 percent had a high school education.The military's presence in Texas grew exponentially during World War II. There were 142 major military installations across the state, and more than 750,000 Texans served in uniform during the war. ... Thirty-three Texans earned the Medal of Honor, including Audie Murphy, the army's most decorated soldier, and Cmdr.The military's presence in Texas grew exponentially during World War II. There were 142 major military installations across the state, and more Thirty-three Texans won the Medal of Honor—twenty-five in the army or air force and eight in the navy or marines.