Answer:
Ancient Nubian cultures were sophisticated and cosmopolitan, as the region served as a major trading center for goods from the African interior, Arabian desert, and Mediterranean basin. From sub-Saharan Africa, Nubian communities traded gold, ivory, ebony, and animal pelts.
It was an ideal center for trade because it was along the Nile River and near overland trade routes.
A sudden violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earths crust or volcanic action.
They were made of sun-dried mud bricks in ancient Sumeria.
Containment was a policy in the US. It was used to prevent communism. There was many strategies used for this component to the Cold War. This series was used in the Soviet Union to enlarge its communist sphere of influence in Eastern Europe, China, Korea, and Vietnam.