Concept:ECOWAS aims to promote economic cooperation and remove trade barriers among West African nations.
Explanation:The Economic Community of West African States (ECOWAS) was established by the Treaty of Lagos in 1975.
Its fundamental objective is to create a common market for member countries.
This means encouraging the free movement of goods, services, and people across borders within the region.
Member states are expected to reduce or eliminate tariffs and other restrictions that limit regional trade.
The broader goal is to speed up economic development and strengthen unity among West African countries.
ECOWAS is not designed to discourage trade, support revolt, or place headquarters in every member country.
Therefore, the basic aim is the liberalization of trade among member states.
Answer:D. liberalization of trade among member states.