The two great empires rose more than 2000 years ago. China and the Roman Empire. The difference in location is very different from the starting point, gathering and collapse of the empire, but there are similarities. China and the Roman Empire are in modern Asia and Europe, their thoughts and achievements are revolutionary from the beginning to the end of the empire. The beginning of the Chinese empire did not occur at a steady pace, but it occurred at an unstable rate.
Expansion of the Empire (Geographical or environmental difference) by the invasion of nomads by the Persian Empire, expansion of the Empire by Alexander, Han Dynasty, Chinese Empire, Byzantine Empire, Muslim morning, Tang Dynasty and Mongol empire East / West direction Means that agricultural innovation may spread due to similar circumstances. Since the Western Hemisphere faces the north-south direction, agricultural crops are difficult to spread and can not adapt to various societies.
Expansion of the Empire (Geographical or environmental difference) by the invasion of nomads by the Persian Empire, expansion of the Empire by Alexander, Han Dynasty, Chinese Empire, Byzantine Empire, Muslim morning, Tang Dynasty and Mongol empire East / West direction Means that agricultural innovation may spread due to similar circumstances. Since the Western Hemisphere faces the north-south direction, agricultural crops are difficult to spread and can not adapt to various societies.
Expansion of the Empire (Geographical or environmental difference) by the invasion of nomads by the Persian Empire, expansion of the Empire by Alexander, Han Dynasty, Chinese Empire, Byzantine Empire, Muslim morning, Tang Dynasty and Mongol empire East / West direction Means that agricultural innovation may spread due to similar circumstances. Since the Western Hemisphere faces the north-south direction, agricultural crops are difficult to spread and can not adapt to various societies.