The was established to promote cooperation among new african nations.

The Organization of African Unity was established to promote cooperation among new African Nations

The Organization of African Unity was created  on May 25th 1963 with 32 Members within the African Nations.

This organization was disbanded in 2002, only to be replaced by a new organization called The African Union

Following the postcolonial era, there was a need for an organization which would serve and promote the development and cooperation among African nations. This organization was called the Organization of African unity which was later replaced with the African Union. 

A similar organizaton in Europe is called the European Union. 

The correct answer is b

Dis the