The Spanish had a positive effect on Aztec civilization because they helped modernize the society. They introduced the Aztecs to domestic animals, sugar , European farming practices.
One could infer from this argument that "<span>Since the states printed their own money, trade between the states was almost impossible," since there was no unified currency with which to buy goods and services. </span>
Because the private market is profit-driven, it produces only those goods for which it can hope to earn a profit. That is, it will not produce public goods.
I believe one was the middle east
