PLS HELP FAST!! 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.

Which source would best a historian understand the effect of the great chicago fire on families? a. a biography of a chicago family displaced by the fire b. a letter from a grandmother in new york to her family in chicago c. a newspaper editorial about families who were displaced d. an oral history dictated by an adolescent who fled the fire