We can look at this from two perspectives, the affect on the physical features of the native people in this region, and the ethnic composition and foreign influence on it.
1. The physical features of the people are heavily affected by the environment, the skin is very resilient to sunlight due to the higher UV received in the high altitudes, the nose is bigger and wider for better and easier intake of oxygen which is more sparse in here, people are shorter and stockier for better bearing of the low temperatures and lower nutrition, the lungs capacity is higher etc.
2. The ethnic composition is relatively homogeneous, the mixing with the newcomers had been small, so these people had kept their native ethnic core due to the harsh region which has been evaded by the newcomers.
Answer:Im not sure,but i think its called a raised beach,or a marine teracces
C since in 2011, the South Sudanese voted on a referendum in which about 99% of the voters voted to separate from Sudan and to become an independent country.
