What roles did the Jesuits and Dominicans play in colonization and trade expansion?

To educate and to expand trade.

Explanation:

The main goals of the Jesuits were to educate people about Catholicism during colonization and to stop the spread of Protestantism in the people.  Spaniards set up the first Spanish colony at Santo Domingo the present is Dominican Republic, which also serves as capital of all Spanish colonies in America. Both Jesuits and Dominicans plays a key role in transferring of plants, animals, foods, human populations including slaves, diseases, and culture between the European countries and the New world.

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