The powers of the national government are limited
Brazil is located on South Africa, so that is most likely the answer.
It was challenging because there wasn't many tools then and not a lot of relying resources. As early New England was developing, some crops would die off from livestock eating it, and lack of knowledge of what they were farming. This was some major things in the development of new England's agriculture.
The answer is B. B stands for Bison. I just threw that knowledge at you.
South of the Sahara is a semi arid strip of land called the Sahel