Answer: D: They unified their lands under one religion.
Explanation: When Ferdinand and Isabella got married they unified their two kingdoms resulting in establishing Spain as having one religion which is Catholic.
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The answer you are looking for is B
The map is pointing to the middle colonies, but the middle colonies consisted of PA, NJ, Delaware etc, but the arrow is specifically on New Jersey so I would assume New Jersey.
Answer:
I would go with B, the more people you get the more staff you will need.