Answer:
3. Eliminating barriers to trade benefits the economies of member nations
Explanation:
There are multiple regional trade blocks around the globe, some being larger, with more members, some with only few members. The reason for the formation of the regional trade blocks and their attractiveness is that the trade barriers between the member countries are removed. This means that the goods can move freely between them, resulting in stronger and more stable economies. Examples of such trade blocks are NAFTA (USA, Canada, and Mexico), and ASEAN (the nations of Southeast Asia).