What are the economic and political arguments for regional economic integration?

Please answer one of the following questions:

1. NAFTA had produced significant net benefits for the Canadian, Mexican, and U.S. economy. Discuss this statement and offer your thoughts on the new proposed agreement between the three countries.
2. What are the economic and political arguments for regional economic integration? Given these arguments, why don’t we see more substantial examples of integration in the world economy?
3. What in general was the effect of the creation of a single market and a single currency within the EU on competition within the EU? Why?

Please remember to include an additional source 

Grading will be as follows:

• Post a thorough response:
  • Include substantive content- 5 points
  • Include a valid internet resource to substantiate your response   –  responses that do not include a valid resource will earn a “0”
  • One or two paragraphs for your selected question
  • Your response should be free of grammar and spelling errors