Why was China isolated from other cultures for a long time? A The wet climate kept people from other countries from visiting. B
The Huang He River acted as a natural barrier against invaders. C The region was large and had difficult terrain. D Pan Gu was a dictator who didn't allow trade with other countries.
Germ Theory was in its early stages and with its discovery brought on a cascade of medical discoveries, all of which helped save the lives of the afflicted.
