Is Japan a Western country ?

[Sukotto]

I did notice there is no mention of the Soviet Union on that map from the 1950's.
I wonder why that is so?

if that particular map (the first on listed) is actually from the 1950s or not, i do not know. i only used that one as an example of ones i've actually seen in real life when i was in grade school in the 80s.
for all i know such maps could be still around.