For 10 points, name this African river that empties into the Mediterranean Sea and flows through Cairo, Egypt, the world's longest.
At its delta, this river splits into Rosetta and Damietta branches. This river exits Lake Victoria at the site of the submerged Ripon Falls. The Lake Tana-sourced river "Blue" version of this river converges with its "White" version at Khartoum.  The building of the Aswan High Dam on this river ended its flooding in one country and created Lake Nasser. The Giza Plateau's namesake Great Pyramid lies on the west bank of this river. For 10 points, name this African river that empties into the Mediterranean Sea and flows through Cairo, Egypt, the world's longest.
At its delta, this river splits into Rosetta and Damietta branches.
{Nile} River