What similarities do you see between the medieval european and japanese social hierarchies? which social class in either society, would you prefer to be a part of, and why?

A big similarity was that both medieval Europe and Japan employed feudalism; roughly summarized in Europe as: King --> Clergy --> Nobles --> Knights (Vassals) --> Serfs; summarized in Japan as: Emperor --> Shoguns --> Daimyo --> Samurai (Vassals) --> Serfs. Addressing the second portion of yoru question, it's YOUR opinion, so I'll leave it up to you :)

Further Topics for Study: Feudalism, Serfs, Vassals, Medieval Europe, Medieval Japan, the Heian Period, The Sengoku Period, the Dark Ages, Christianity, Animism, and more!

east-west schism. the greatest effect of the east-west schism was the creation of two separate churches that had previously been unified under one church, the eastern orthodox church and the roman catholic church.

small european communities with shared traditions consolidated into large new states (apex)