The correct answers are:
- Nile River Valley;
The Nile River Valley is a very fertile place. Every year the valley is flooded by the waters of the Nile River, thus living very big amounts of deposits that form nice fertile layers. This enables the people in this part to perform agriculture and produce a lot.
- Southern tip;
The southern tip of the continent is generally dominated by grasslands. The grasses don't take much of the soil, but fertilize it a lot when they are dying out each season, thus creating a very nice deep layer of very fertile humus. This makes this part of the continent very suitable for agriculture and big and quality production.
