How did Spain establish its empire in the Americas?

PLEASE FAST? :))

In order to control its new empire, spain created a formal system of government to rule its colonies. why were missions established? the spanish believed they had a duty to convert Native America to christiananity. ... land grants that uncluded the right to demand labor or taxes for naive america.

Explanation:

the doctrine of nullification recommended that states living inside the union have the one-sided, inalienable ideal to void any law made by the national government that could be esteemed illegal.

the united states was shaped based on a general agreement among its individual states. hence, it is inferred that under the hypothesis of invalidation, since the states are the establishment of the union, they have the ability to referee and disprove unlawful laws.