What happened here?

>>3259181
In contemporary times, it's becoming the source of a larger conflict. Larger populations in Sudan are settling along the river, and of course, drawing water from it to irrigate their crops/drink/live with. Obviously this means less flow is going to Egypt.

It'll be a flashpoint in about 30 years.

>>3259218
Will the Christians finally retake the Nile?

>>3259230
Unlikely. The Egyptians are much better equipped and financed and will likely be able to force any settlement they want out of the Sudanese.