Encomienda System: A labor system established by the Spanish Crown during colonization where colonists were given land and indigenous people to work it in exchange for converting them to Christianity.
Columbian Exchange: The widespread transfer of plants, animals, culture, human populations, technology, diseases between Americas and Old World following Christopher Columbus' voyages.
Conquistadors: Soldiers and explorers from Spain who sought personal riches and power while also aiming to spread Christianity in New World during 16th century.