Climate change significantly decreases the availability of freshwater, making it a severe threat to all those who depend on the Nile. By the end of the century, heat waves could reduce the flow of the Nile in Egypt by an estimated 75 percent. Water Scarcity. Although it is rarely the sole cause of an issue, water scarcity exacerbates tensions and can act as a trigger in the Nile River conflicts. Both East Africa and North Africa have politically unstable and violent-prone regions.
Answer: Nationalism
Nationalism is identification with one's own nation and support for its interests, especially to the exclusion or detriment of the interests of other nations.
Our whole history would have be changed dramatically