The European Union has positively affected the economies of Europe byA) refusing to allow countries to trade with each other. B) allowing England to become the richest European country. C) lowering or

The European Union has positively affected the economies of Europe byA) refusing to allow countries to trade with each other. B) allowing England to become the richest European country. C) lowering or eliminating barriers that slow down trade between countries. D) making taxes on imported goods higher and promoting economic independence.