Final answer:
The African monsoon affects the West African coast and the Central African interior by bringing seasonal rainfall changes, which can lead to flooding in coastal areas and impact agriculture in the interior regions.
Step-by-step explanation:
The African monsoon significantly affects two main regions: the West African coast and the Central African interior. These areas experience seasonal wind changes that lead to periods with higher rainfall, contributing to the region's climate variability. In West Africa, the monsoon season brings heavy rains, which can lead to flooding along the coastal areas, particularly affecting countries like Ghana and Nigeria. The interior regions, including parts of the Sahel, also see fluctuating rainfall patterns due to the monsoon which can impact local agriculture and living conditions.