The Church did not know any other way then following the Bible, causing an unwanted and unfamiliar change to their environment
The Song Dynasty practiced Buddhism whereas the Tang banned the religion and persecuted those who followed it during the later time of their ruling. The Tang Dynasty also had expanded their empire and even reformed civil service. The Tang expanded and conserved their power by establishing tributary states. They had a stronger more powerful military when compared to the Song. The Song Dynasty ruled a smaller empire during their time that primarily relied on sea power. Their military power was weaker than what the Tang Dynasty’s was.
They needed the nile river for food purposes like fish. and to plant their crops.they also needed the nile as a water source. hope this hlps
Black Sea, the Black Sea has Russia's warm water port.
I hope this helps! :)