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How common are men-women friendships on Facebook? (jlai.lu)

submitted 1 week ago by Mubelotix@jlai.lu to c/map_enthusiasts@sopuli.xyz

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[-] rustydrd@sh.itjust.works 7 points 1 week ago

This phenomenon is called a phantom border, and Germany is not the only example (but one that is really striking on lots of maps). Poland is another example, as are the Southern US.

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[-] Zagorath@aussie.zone 3 points 1 week ago

You can even get it within a single city. Sydney's "Red Rooster line" is a well-known example here in Aus.

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this post was submitted on 02 Dec 2025

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