WORLD CIVILIZATION

Detailed explanation-1: -Nubians lived in the central Nile valley.

Detailed explanation-2: -And the people who lived there frequently traded with their Egyptian neighbors. Nubia was known for its gold, ivory, ebony and incense. Many of these luxury goods came from sub-Saharan Africa and passed through Nubia to reach the larger world, traveling via the Nile River.

Detailed explanation-3: -Around 5000 B.C., when the climate became more arid, nomadic groups retreated to the Nile Valley, creating the first urban settlements. These communities were concentrated in the North and the South. As a result, Egypt became known as the “Double Land” or the “Two Lands” of Upper and Lower Egypt.

Detailed explanation-4: -Every aspect of life in Egypt depended on the river – the Nile provided food and resources, land for agriculture, a means of travel, and was critical in the transportation of materials for building projects and other large-scale endeavors. It was a critical lifeline that literally brought life to the desert.