Answer:
c.) an enormous change in the rules of commerce due to the Columbian Exchange
Explanation:
It is the only one that has part of the word "commercial" so it is bound to be it.
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C) the government can’t force people to accommodate soldiers in their homes
A. it took a few decades. The court ruled that even if they are separate, as long as they are equal, it was okay.
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The answer would be all of the above