The United States buys 81 percent of all Mexican exports. In one or two paragraphs, describe how this affects Mexico's economy and politics.

In a mercantilist system a country tries to increase its blank and decrease its blank

Which continents lie only in the northern hemisphere

This is a 2017 topographic map of puerto rico in the united states, and i'm sorry that people there have suffered such a disaster. i want to ask, what do the yellow dots and areas represent on this graph? and the blue area and the little blue circle, and the little blue sign that looks like a signal tower, what do they stand for?