Because the Spanish defeated the Aztecs, . a. the Aztec capital was rebuilt as a Spanish capital.
b. mining caused a reduction in the Spanish population.
c. Cortés was able to continue exploring down into South America.
d. none of the above were results of the Aztec defeat.

A. the Aztec capital was rebuilt as a Spanish capital.

Explanation:

Spain's intention to attacked the Aztec was to take control of the resources that exist within their region (most notably Gold and different varieties of agricultural product)

After the Aztec is defeated, Spain need to built a base in that region that will serve as a control post during the resource extraction process. This is why the Aztec capital was rebuilt as a Spanish capital. They implemented some sort of government for easier communication with the government in Spain and brought in the technologies necessary for the resource extraction.

on the morning of  july 21,  1861, general mcdowell ordered the  unionarmy to attack. it was on this hill that  confederate  colonel thomas jackson and his forces held back theunion  troops.