A collection of texts found by this body of water includes the so-called “Passover Letter,” (-5[1])which provides instructions for observing the Festival of (-5[1])Unleavened Bread. An ancient ruler from Thinis is thought to have conquered this body of water’s Naqada III archeological culture. A siltstone tablet depicts (-5[1])a ruler of this river preparing to strike a kneeling captive (10[1])with a mace. A namesake ruler of this river is depicted with a dual crown on that tablet, (10[2])the Narmer (10[1])Palette. (10[1])An enormous cache of ancient Aramaic documents was discovered on this river’s Elephantine Island. The pith of one plant that primarily grew along this river (10[1])could be compressed to create mats and scrolls. For 10 points, the annual flooding of what river allowed for the cultivation of papyrus in ancient Egypt? ■END■ (10[1])