<span>Assuming that this is referring to the same list of options that was posted before with this question, <span>the correct response would be "supply and demand", since this dictates what is bought and sold and at what rates.</span></span>
One item can be the weapons. Many Europeans gave the natives a bunch of weapons because they had plenty. They even gave them faulty weapons or broken ones because the natives didn't know any better.
Here are the answer's. "D""C""C""A"