Which lake in africa is located at about 13 n 14 e

The Mongols had much information on astronomy, math an metallurgy that they shared across continents. There were advanced in the knowledge of gunpowder which was a major technological advancement of the time. Mongols poured resources into studying engineering, math and astronomy going as far as hiring Middle Eastern Muslims to help them. They also greatly encouraged learning and integrating Chinese and Middle Eastern math as well as learning and sharing medical knowledge and texts. They also invest time and resources to learn about metal casting that created cannons and explosives which was knowledge they were quick to share among themselves.