The physical geography of East Africa is dominated by the Great Rift Valley, which extends through the middle of the region from north to south. Associated with the rift valleys are vast savannas such as the Serengeti Plain, large lakes, high mountains, and the highlands of Ethiopia.
B. The northeast.
The northeast had more factories and more railroads than any other part of the country at that time.
According to the dictionary it means "a prolonged period of abnormally low rainfall, leading to a shortage of water."
Basically it's when there is very little rain or water and the amount of water in a place decreases.
A is not a foreign policy goal. Environmental laws have nothing to do with other nations. Hope this helps!!