Pastoralists living around this river are thought to have first domesticated donkeys in an area where the Kerma culture later developed. Archives from this river’s Elephantine island are an important source for Imperial Aramaic texts. New irrigation techniques were introduced to a civilization along this river by the Hyksos. (10[1])The island of Rhoda is the site of a vertical column submerged into this river to measure its annual flooding. Nubians began (10[1])trading gold (10[1])north (10[1])along (10[1])this river (10[1])before the rise of one civilization’s Old Kingdom centered at Memphis. For 10 points, name this river whose papyrus stalks were used for scrolls by the ancient Egyptians. ■END■