The organization which was created to promote the free trade was NAFTA. Thus the last option is correct.
Trading refers to the exchange of the goods and services from the one state to the another or from one nation or the other. Thus it is an activity of the buying and selling of the goods.
The full form of NAFTA is North American Free Trade Agreement is an agency created to allow the free trade between the three nation which are United states, Mexico and Canada.
It was enacted in 1994 with the purpose to eliminate all the tariff and non- tariff barriers in the trade so that smooth flow of the trade could take place.Thus the last option is correct.
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