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Mariano Vallejo a. spoke out in favor of more fair treatment of Mexican Americans and Native Americans. b. acted as an advisor to President Polk during the Mexican War. c. negotiated the Gadsden Purchase. d. urged Mexican settlers in the US to take the law into their own hands.

Respuesta :

Mariano Vallejo supported providing more fair treatment to the Mexican Americans and the Native Americans.

Option A is the correct answer.

Who was Mariano Vallejo?

Mariano Vallejo was a politician and rancher in the year the 1840s and also acted as a leader in transforming California.

 

Mariano Vallejo was known for his military operations for protecting California from the dominators, Russians, and made a settlement with the government of Mexico. He also transformed the Alta California which was the province of Mexico into the state of California.

Therefore, fair treatment of the Mexican Americans and the Native Americans was provided by Mariano Vallejo.

Learn more about the Mexican Americans in the related link:

https://brainly.com/question/3119472

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