Rwanda

It is truly a painful one. For all those years the Mediterranean continues to be salty despite the feeding on the fresh Nile water all thousand of years.

No it is absorbed into the salty waters of the mediterranean, it is therefore a slow painful death for the Nile's fresh water blood and the organisms within the fresh waters of the nile, a sort of interbreeding, where the salt of the Mediterranean becomes the dominant gene.

If the Nile is born in Uganda, does it die in the Mediterranean?

John, I'm missing originates from your list ;)

And Erick, I think I do :)