Concept:ECOWAS faces obstacles rooted in the historical divisions created by colonial rule, which hinder regional unity.
Explanation:Colonial heritage is a major problem for ECOWAS.
The region was divided by different European colonial powers.
This created artificial borders and separated people with shared cultures.
It also left behind different official languages, legal systems, and currencies.
These differences make cooperation and integration more difficult.
In contrast, facilitating movement, inter-state trading, and sports and cultural exchange are among the main objectives and positive activities of ECOWAS, not problems.
Answer:A. colonial heritage