Crop rotation is wht they will use
The reason we joined in world war one was due to the germans sinking merchant ships that had US citizens on them and they were also sinking some of our own ships. Due to that President Wilson involved us in the war.
Free trade agreements
The goal of both NAFTA and the EU is to create free trade between the countries of their given continent.
Free trade means no tariffs on imported goods and the ability of corporations to move their products from country to country with no penalty. For NAFTA, Canada, the US, and Mexico can freely trade across the borders and tariffs will not be imposed under the treaty.
I would say C. They get cold weather in northern Asia
The greatest change in the West that was brought about by railroad expansion was a drastically increased population size, since people could now claim land and travel far more easily.
