A company with a pure monopoly means that a company is the only seller in a market with no other close substitutes. ... Also, with pure monopolies, there are high barriers to entry, such as significant start-up costs preventing competitors from entering the market.
D is the answer ( for cutting off our trade with parts of the world )
Some liked the new people, some did not. Some Natives saw this as an opportunity to trade. Some battled with the conquistadors. They were confused because they had not seen someone with the skin color of the conquistadors. The conquistadors also brought along diseases with them which killed many, and made much more ill.
