What is the only west africia country that is developed enough to souporrt large interior cites?

The only West African country that is developed enough to support large interior cities is Nigeria. Its economic growth, driven by industries like oil and agriculture, has led to urbanization and the establishment of significant cities beyond the coastal areas, such as Kano and Abuja. These cities have developed infrastructure and services that cater to large populations, reflecting Nigeria's status as a regional powerhouse.