People were starting to go out of country for exploration because of the resurgence of population after the Black Death and new governments wanting to establish commercial development
Columbus traveled from Spain to the Americas three times until finally realizing he had not reached Asia but another continent- gave Spanish incentive to explore overseas more
military expedition against Aztecs, Tenochtitlan
He was under Spanish control and so the Spanish had complete control over new territories. They claimed the entire New World except what is today Brazil that was reserved because of a papal decree for the Portuguese- Treaty of Tordesillas.
St. Augustine established in Florida
Don Juan established a colony in what is now New Mexico