Above the 1st Cataract of the Nile up to the confluence at Khartoum.
Answer: along the sea coast
The collapse of the cattle kingdom. A combination of factors brought an end to the cattle kingdom in the 1880s. The profitability of the industry encouraged ranchers to increase the size of their herds, which led to both overgrazing (the range could not support the number of cattle) and overproduction. but i think this may help
<span>one of the earliest systems of writing</span>