What are regional trading blocs? What are the three largest regional trading bl

What are regional trading blocs? What are the three largest regional trading blocs? What countries are members of each bloc? What are differences and similarities among these three regional trading blocs? Your response should be at least 200 words in length. You are required to use at least your textbook as source material for your response. All sources used including the textbook must be referenced; paraphrased and quoted material must have accompanying citations. Herdesky H. (2011). International management: Managing across the borders and cultures. (7 ed. pp. 10-12 15-16). Upper Saddle River: The Pearson Education Company. (Herdesky 2011)