1. The United Nations (English: United Nations, abbreviated as? UN? Or? U.N.) is an intergovernmental international organization composed of sovereign countries, which is committed to promoting cooperation among countries in international law, international security, economic development, social progress, human rights, civil liberties, political freedom, democracy and the realization of lasting world peace.

2. World Trade Organization (English: World Trade Organization, abbreviated as? WTO is an international organization responsible for supervising the implementation of various trade agreements among member economies. Its predecessor was the Secretariat of the General Agreement on Tariffs and Trade, which was implemented in 1948.

3. who (English: World? Health? Organization, abbreviated as? WHO) is one of the specialized agencies of the United Nations, the largest public health organization in the world, headquartered in Geneva, Switzerland, and the largest intergovernmental health institution in the world. According to the Constitution of the World Health Organization, the purpose of the World Health Organization is to enable people all over the world to obtain the highest level of health possible.

4. European Union (English: European Union; French: Union européenne；; German: Europ? Ische Union), referred to as the European Union (English: EU; French: UE; German: EU), a political and economic union established according to the Maastricht Treaty, which came into effect in 1993, now has 28 member countries and 24 official languages.

5. the Pacific Community (SPC) is a centralized regional cooperation mechanism for Pacific islands expanded by the South Pacific Commission on February 6, 1998. Member States retain their previous membership in the South Pacific Commission. Headquartered in Noumé a, the capital of New Caledonia.

international organizations are one of the studies on international institutions and their procedures; An international organization set up to handle international affairs and formulate procedures to facilitate the handling of affairs. Organizations with international behavior characteristics can solve various affairs between countries. International organizations can be divided into two main types:

1. Intergovernmental international organizations (IGOs): international organizations whose members are sovereign countries or whose other members are not necessarily sovereign countries (like the European Union and the World Trade Organization).

2. Non-governmental international organizations (INGOs): Any international organization established without intergovernmental agreement is regarded as a non-governmental international organization established for this arrangement. Including independent organizations, non-governmental organizations, the third sector, voluntary associations.

from a legal point of view, an intergovernmental international organization must have a convention as its foundation and a legal person.