Culturally and historically speaking, do you consider South Korea to be a part of Western civilization?
There are Western influences, but South Korea has a lot of their own identity. It is definitely more Eastern than anything.
Yes, I think modern South Korea is a part of the West. It’s cultural, economic, and political evolution over the past fifty years has been profound and I think it meets all the basic requirements.
Like Japan, Western culture has been important factor in the restructuring of Korean society following WWII, though I would like to point out that extensive cultural contact does not make one national culture part of another tradition, even if it adopts some aspects of it.