Summarize and contrast the main arguments on both sides of the issue.

In the globalized economy of the late 20th and early 21st century, liberalized trade was sought through regional trade agreements and broader global trade liberalization. The policy choices between these two approaches has created debates among economists and politicians concerning which is a better strategy for various countries and for the global economy as a whole, and whether the two approaches are complementary or contradictory.

Summarize and contrast the main arguments on both sides of the issue.
Illustrate the two approaches with real world examples.