a) You have read all the time that trade brings net benefits to nations open to it. But are there any costs or drawbacks that come with open global trade? (b) Consider a country that is open to trade, but is using protectionist policies like tariffs and quotas. Why do you think that most consumers do not vigorously oppose these protectionist policies? (c) Suppose the country in (b) imports and exports goods and services from more than 80 different nations, but the bulk of its imports and exports tend to come from the same five nations. What might be the reasons that the majority of its imports and exports come from only five different nations as opposed to being more evenly spread across the 80 different nations that it trades with?