You acquire culture through co-mingling and confusion of the elements and ideas of different peoples. Isolate cultures have common roots with others, and evolve

You acquire culture through co-mingling and confusion of the elements and ideas of different peoples. Isolate cultures have common roots with others, and evolved in the same way. Drift happens with extended isolation, but if anything this is more of a degenerative process than anything else. Our precious "British" culture is a Franco-Germanic-Nordic-Celtic-Romano-Pictish-Jutish-Afro-Indian-Sinesian and god only knows what else fusion. They should teach Bayeux, not Carta.