A) China was isolated from other civilizations and developed a unique culture.
With wastelands and hills in China's west which was mostly invulnerable due to the inadequate long-range transport options available, early China's civilizations were negligent that European developments existed prior to the expansion of the Silk Road. In this way, geography sustained early China culturally and economically separated from the rest the world. However, ancient Chinese cultures were opened to the sheep and cattle herders inhabiting the grasslands in the northwest, and the fishing practices along the southeast coasts. These neighboring societies were both wandering and uneducated. Due to this fact, ancient China considered itself the most important and superior culture by contrast.