Which social class controlled most of mexico before it gained independence from spain

Spaniards were the ruling class in Mexico, and comprised of people born in Spain who moved there. They were the only class allowed to hold government positions

Creoles were people of Spanish descent who were born in Mexico, and were treated less then Spaniards.

Mestizos were people of both Spanish and Indian descent and were looked down upon by both the Creoles and the Spaniards

This would be an open primary. a closed primary people can vote only prior to election day if the party if they are registered. independent voters can not participate. there is not a wide-open primary, but there is a semi-open primary.

Answer the use of flood plains and irrigation;