Both are in the same planet. My teacher put that in a trick quiz, dont know if my answer is the same as your opitios.
Good Morning!
In the postwar period, under a melancholic and bellicose climate, the literary genre that developed most strongly was the war literature. This genre, which had been sketched in Napoleon's times, carried the trenches and battlefields as a backdrop.
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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.