The correct answers are:
- Abundant rain forests; the coastal countries of West Africa are mostly covered with dense rain forests, and this is due to the constantly warm weather and very high precipitation all over the year.
- Crop productivity; because the only season is summer, and it is warm and rainy, there are multiple crops that have very high productivity and also are harvested more than once in a year.
- Improved transportation; the transportation in this parts has improved in the past few decades, especially the transportation on water, which is of great economic importance.
