18) " created the world's largest free trade area. increases the u. s. economy by .5% a year." (source: ustr) what should go in both blanks? (g4.4) * 1 point panama nafta nato congress

I believe the answer is: NAFTA
The establishment of NAFTA, allow Canada, United States, and Mexico to develop better trading agreement such as lower price of commodities, lower tariff, or lesser restriction of immigration policy. This contributed to the economy by increasing the net profit of local businesses.