Answer:
1. Slaves were able to complete any task that required manual labor
2. Enslaving people was extremely profitable as you don't pay slaves a salary.
3. With the increase and advancement in technology, the need for slaves went up, as manual labor also increased.
Explanation:
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All of the following were religious orders that were part of the Catholic Church except "<span>c. Heretic order," since in fact Heretics traditionally are enemies of the religion in question. </span>