Mark each statement if it describes a way in which China's early civilization differed from other river valley civilizations.. . A.. China's geographic location, with the Gobi in the north, the Himalaya to the west, and seas to the south and east, isolated early Chinese civilization from other cultures.. . B.. China's civilization began at the same time as the Egyptian and Sumerian civilizations.. . C.. China's civilization is the oldest continuous civilization in the world.. . D.. China's early civilization did not depend on channeling floodwaters.