Both Europe and Japan had a "cast system" you could say, where peasants worked the land that the nobles owned. (The Japanese had their own terms for the people, I just can't remember them.) During this time, Europe had knights and these Knights had a code called Chivalry. Over in Japan, there were Samurai with a very similar code which was called Bushido. Hope this helps.
Triangular trade increased the demand for both land and slave labor
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Important reasons for studying history are recognizing patterns, connecting the past to the present and revealing past contributions of civilizations.
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