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.

30 and 44 are b

explanation:

option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation: