 Wheat from the Yenisey was sold by Muslims and Uighurs during inadequate harvests to Bukhara and Soghd during the Tahirid era.Russians first reached the upper Yenisey in 1605, travelling from the Ob, up the Ket, portaging and then down the Yenisey as far as the Sym.During World War II, Nazi Germany and the Japanese Empire agreed to divide Asia along a line that followed the Yenisey to the border of China and then along the border of China and the Soviet Union.