How was medieval Japan influenced by the following cultures?

Korea, China and later the Western Hemisphere have influenced Japan differently.

Explanation:

By culture, it was Korea that had the most substantial influence on Japan and Korea was the main link between mainland Asia and Japan. In addition to Korean cinema, it had a high impact on Japan. First of all, it refers to the penetration of Buddhism in Japanese territory, which has left a strong influence in that country. Japan's seclusion for the rest of the world has long been a barrier to the penetration of other cultures on Japanese territory. Direct contact with Western cultures expands the influence of these countries in Japan and is primarily reflected in everyday life, nutrition, lifestyle and the arts.

i would say your answer would be the second option.

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in his book, the riddle of the rosetta stone, james giblin talks about how there was a young british polymath and physician named thomas young who made a lot of advances on the deciphering of the rosetta stone. he says that even though young made a lot of mistakes because he was working under false assumptions, he also made huge contributions like deciphering three out of the seven symbols (more than anyone else before him). young published his findings and continued his good work but he wasn't able to progress much further due to some unfavorable situations, he still laid the basis for many other scholars and of course for the man who has been generally known to have deciphered it, jean-françois champollion