Answer:
When Mexico first gained independence from Spain, it was set up as a Monarchy, the catholic church was the official church, and upper-class status was granted to the indigenous and mestizo populations.
Option (a) is true.
Step-by-step explanation:
When Mexico first gained independence from Spain in 1821, it was set up as a monarchy under Agustín de Iturbide.
The Catholic Church remained the official church, and upper-class status was granted to both the indigenous and mestizo populations.
Monarchy: The first independent government of Mexico was a monarchy under Agustín de Iturbide.
Catholic Church: The Catholic Church remained the official church of Mexico after independence.
Indigenous: Indigenous people were granted citizenship and voting rights after independence.
Mestizo: Mestizos, people of mixed European and indigenous descent, held a significant portion of the upper-class status in Mexico after independence.
Thus,
Option (a) is true.