OPEC Organization of the Petroleum Exporting Countries
Its mandate is to "coordinate and unify the petroleum policies" of its members and to "ensure the stabilization of oil markets in order to secure an efficient, economic and regular supply of petroleum to consumers, a steady income to producers, and a fair return on capital for those investing in the petroleum industry.
The North American Free Trade Agreement (NAFTA) is a treaty entered into by the United States, Canada, and Mexico; it went into effect on January 1, 1994.
G20 which stands for Group of Twenty, is an assembly of governments and leaders from 20 of the world's largest economies: 19 countries – Argentina, Australia, Brazil, Canada, China, France, Germany, India, Indonesia, Italy, Japan, Republic of Korea, Mexico, Russian Federation, Saudi Arabia, South Africa, Turkey
The World Trade Organization (WTO) is the only global international organization dealing with the rules of trade between nations. At its heart are the WTO agreements, negotiated and signed by the bulk of the world's trading nations and ratified in their parliaments.
The EU is unlike anything else—it isn’t a government, an association of states, or an international organization. Rather, the 28 Member States have relinquished part of their sovereignty to EU institutions, with many decisions made at the European level.