Answer: A- Lower barriers to international trade for all nations
Explanation: There are different barriers to international trade and they include: language barriers, high tariff and high tax imposition and exchange controls by Government.
The high tariff on imported goods and high tax imposition on imported goods makes them more expensive to buy and consumers will rather go for less expensive goods. The Government controls include imposition of quota imports that is set an amount or number of imported goods to come into the country at any given time.