Aristotle tutored alexander the great and went to plato's academy in athens, greece.
Islam, Judaism and Christianity all believe in an after life, and they all have a holy book.
Answer:
Travelers and messengers spread the art of iron working. -Iron working was spread through trade. Iron working technology led to the expansion of agriculture. Iron-working technology intensified warfare between communities due to the production of iron weapons.
they claimed that without slaves the economy would collapse I think, I'm not quite sure if I'm remembering correctly though
