If the nations of the world were to suddenly cut off all trade with one another, what products...?

If the nations of the world were to suddenly cut off all trade with one another, what products might you no longer be able to obtain in your country? Pick another country and identify the products it would need to do without. Please indicate what countries you are talking about!|||Well the U.S. would be screwed our major export is scrap metal and we import ******* everything first thing to tank would be Walmart