This is a general issue with what is taught as world history, from school textbooks to the doorstops of Toynbee and his ilk. They all start with "western Europe and the societies derived from it are the world" with a brief mention that China is over there, too, and then trace the history of the societies that western European mythology claims as predecessors (Rome, Greece, Egypt). If you compare this to the space and time occupied by humanity on earth, it's ludicrous.