Solution:United Nations - The United Nations (U.N.) headquartered in New York, is a 193 member international organization. It was established in 1945 in order to avert another world war.
NAM - The Non-aligned movement was founded and held its first conference (the Belgrade Conference) in 1961 under the leadership of Josip Broz Tito of Yugoslavia, Gamal Abdel Nasser of Egypt, Jawaharlal Nehru of India, Kwame Nkumah of Ghana and Sukarno of Indonesia.
Group of 77 (G. 77) - The group of 77 (G. 77) was established on 15th June, 1964 by signatories of the "Joint Declaration of the Seventy - Seven Developing Countries" issued at the end of the First Session of the United Nations Conference on Trade and Development (UNCTAD) in Geneva.
G-20. The G-20 was founded in 1999 in response to several word economic crises. The G-20 is composed of most of the world's largest economics, including both industrialized and developing nations and accounts for around 90% of gross world product (GWP), 75.80% of international trade.