Answer:
Open trade is particularly beneficial to the poor, because it reduces the cost of what they buy and raises the price of what they sell. As new research from the World Bank and the World Trade Organization makes clear, farmers and manufacturing workers earn more income when their products can reach overseas markets.
Imported goods.
Explanation:
Tariffs increase the prices of imported goods. Because the price has increased, more domestic companies are willing to produce the good, so Qd moves right. This also shifts Qw left. The overall effect is a reduction in imports, increased domestic production, and higher consumer prices.
Magnetic Force? I think aha. Almost positive.
I'm not sure what question 4 is. If you could add both the picture and the question, that would be great.