The Aswan ("AHS-wahn")
The Atbarah ("ott-BAR-uh") is an arm of this river that starts at Lake Tana ("TAWN-uh"). The Aswan ("AHS-wahn") High Dam, an attempt to control this river's flow, resulted in the creation of Lake Nasser, a massive reservoir shared by two nations. This river splits into two different sections near Khartoum ("CAR-toom"), the Blue and the White. For 10 points, identify this river considered the lifeblood of civilizations in Sudan and Egypt, the longest river in the world.
The Atbarah ("ott-BAR-uh") is an arm of this river that starts at Lake Tana ("TAWN-uh").
{Nile} River