Countries, why might some countries want to place trade barriers, such as extra taxes, on imported products?
A) This is necessary to keep a country's currency strong.
B) Imported products are usually not as good quality as domestically made products.
C) Generating government revenue is often more economically valuable than free trade.
D) Imported products compete with domestic products and thus put pressure on local business.
E) International trade tends to lead to political tension.