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Bulkan wrote:

I wonder were they got the idea for Romulans and Vulcans from.
Or Star Trek in General.

I guess now is as good a time as any to attempt to answer the question.

The Romulans, like the Klingons before them, are inspired by Soviet Russia, whilst the Federation and their Allies (presumably also the Vulcans) would play the role of the US and its allies.

You'll note the 38th parallel-esque demilitarized zone between the Romulans and the Federation. Also, the cold war standoff scenario they have at the current point in the timeline.