The fact is this paper is still unacceptable. The question was about trade systems up to 476 CE, your discussion is basically about the neolithic and very, very early bronze age. Again, you have to discuss:1. River Valley Civilizations and their trade systems (Mesopotamia and Egypt).2. THE GREEKS and the Mediterranean trade3.The ROMANS and their expanded trade networks into the Silk Roads.You have until the end of the week.