Genetics is more easily displaced, thrown around, spread and isolated. It's really nothing (and never was) to rely upon to describe 'Culture' - especially when BEING ROMAN, was not based upon 'genetic' appearance or RACE.
Being Roman - was a 'cultural' thing and so to was being Celtic (Western), Latin (Southern), Scandinavian (Northern) and Slavic (Eastern).
Even now - the Karelian peoples of Russia still 'culturally' consider themselves 'Scandinavian' due to the 'early' Rouse past.
So here's this little 'ramshackle' 'Western' (Political/Celtic) culture in EORA country down here in the SAHULIAN region of the world...
...but hey, we all know 'Westerners' have NO IDEA about this part of the world and thus can only 'compute' the idea that they are living in SOUTH ASIA (Austral-asia)
Westerners/Politicals - are absolute RETARDS in this part of the world.