Rocky outcrops along this body of water called got allowed chiefdoms called rwodi like Patiko to develop and later evade Karimojong raids. A line of “divine kings” starting with the culture hero Nyikang ruled this body of water’s Shilluk Kingdom, which repeatedly fought a kingdom led from Sennar. The Bari and related peoples migrated up this river after the end (10[1])of the baqṭ (“bukt”) treaty, which caused kingdoms led from Soba and Dongola to decline (10[1])and allowed the Funj (10[1])Sultanate to expand along this river. Alodia and Makuria’s loss of control over this river forced the Nuer (“NOO-er”) and Dinka to migrate further up this river to (10[1])avoid slave raids by the Mamluk Sultanate and a later conquest by Muhammad Ali Pasha. For 10 points, name this river around which Nubian kingdoms were based. ■END■