The World Bank (WB) was initially established to re-build Europe after World War II. Today, it provides long term loans to developing countries. It has its headquarters in Washington and is usually led by a US appointee.
The International Monetary Fund (IMF) was also established after World War II to ensure that international exchange rates were kept stable and to encourage free trade. It provides loans to countries experiencing short term Balance of Payments problems (where imports exceed exports) and those on the brink of bankruptcy. It also has its headquarters in Washington and is usually led by a European appointee.
IFIs (International Financial Institutions) usually refers to the WB and the IMF.
The G8: "Group of Eight Countries" is the group of the seven richest countries in the world, the G7 (Italy, the USA, the UK, France, Germany, Japan, Canada) plus Russia.
Trans National Corporations (TNCs, also known as Multi-National Corporations or MNCs) are large international companies with manufacturing bases throughout the world, but usually with headquarters in developed countries.
World Trade Organization (WTO) is an international organisation that oversees a large number of agreements defining the "rules of trade" between its member states. Its broad goal is the reduction or abolition of international trade barriers. Located in Geneva, Switzerland, it has 148 member states. It sometimes has ministerial meetings, such as in Seattle in 1999 and Cancun 2003, both of which were the focus of many protests.
Source:www.wikipedia.org .