Five countries had a long standing agreement to boost multilateral trade. When it was time to extend the validity of the agreement, member countries decided to change one specific element: until then, members had no barriers to the trade amongst them, and also had a shared external trade policy toward nonmembers. After the extension, all members will allow people and other factors of production to move freely across their borders. Based on this, one could say their level of economic integration went from a(n)___ to an) Customs union: Common market Common market customs union Economic union: Free trade area Customs union; Free trade area
