古代美洲文明贸易问题1.What was traded?Why?(supply and demand)2.What te

古代美洲文明贸易问题
1.What was traded?Why?(supply and demand)
2.What technology was needed and how did they obtain it?
3.What other things are being exchanged?(disease,goods and ideas)
4.What started the exchange?(social,religious,or political pressures)
5.What was the most significant item of the exchange?(item or idea)
6.How was the world changed by trade?
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1.Because the production capability,has not yet been invented money,so the the main way of ancient American trade is barter.
2.As everyone knows,wheels and horses.But the ancient America without these things,until the western invasion to take.
3.advanced weapons,advanced production tools,a new belief and never seen before disease.
4.Exchange mainly comes from the needs of people's life.
5.Living supplies,weapons,foods etc..
6.The American trade in the western countries have many additional precious metals,and learned to grow new crops,such as potatoes,tomatoes,green pepper,pumpkin,beans and so on.