I can recommend “Vanished Kingdoms” on the subject of pre-modern Europe: https://en.m.wikipedia.org/wiki/Vanished_Kingdoms https://en.m.wikipedia.org/wiki/Vani

I can recommend “Vanished Kingdoms” on the subject of pre-modern Europe: https://en.m.wikipedia.org/wiki/Vanished_Kingdoms https://en.m.wikipedia.org/wiki/Vanished_Kingdoms