African Union
The African Union is a union consisting of 54 Africa
Africa is the world's second largest and second most populous continent, after Asia. At about 30.2 million km² including adjacent islands, it covers 6% of the Earth's total surface area and 20.4% of the total land area...

n states
Sovereign state
A sovereign state, or simply, state, is a state with a defined territory on which it exercises internal and external sovereignty, a permanent population, a government, and the capacity to enter into relations with other sovereign states. It is also normally understood to be a state which is neither...

. The only all-African state not in the AU is Morocco
Morocco , officially the Kingdom of Morocco , is a country located in North Africa. It has a population of more than 32 million and an area of 710,850 km², and also primarily administers the disputed region of the Western Sahara...

. Established on 9 July 2002, the AU was formed as a successor to the Organisation of African Unity (OAU). The most important decisions of the AU are made by the Assembly of the African Union
Assembly of the African Union
The Assembly of the African Union, which is formally known as the African Union Assembly of Heads of State and Government AU-AHSG, is one of several decision-making bodies within the African Union. The other bodies are the Pan African Parliament, the Executive Council consisting of foreign...

, a semi-annual meeting of the heads of state and government of its member states.