Because they lost the war to the Colonists.
The answer is to this question is A
The Spanish conquistadors believed them to be infidels. They would read them a note from the Pope in Spanish that they wouldn't understand in which they would proclaim that their land would now be Spanish because Spain is governed by one true God, and after that they would slaughter them if they wouldn't surrender.
The correct answer is A) prepare and approve the party's beliefs
At the party's convention, delegates gather to draft the party's platform for the Presidential election and eventually work their way to nominate their candidate for that year's Presidential election.