D. Obviously because it was large and they didn't have a lot of supplies to go across also it was very deep.
Hi there,
the answer to your question is D. Islam.
During the 600s the Islamic religion spread towards Northern Africa.
Hope this helped :)
The answer is D. It happened because of ethnic tensions that led to Genocide against the Tutsi which was organized by the members of the Hutu majority government. It killed approximately 500,000 to 1,000, 000 Rwandans between April and mid July of year 1994.