On this historical map of Britain, you can see how the country was devided in between 1250 and 1450. Also Ireland, Scotland and Wales.
County Palatine of Chester, 1250, Palatinate of Durham 1400, County Palatine of Lancastaer 1300, Isle of Ely 1350
Map of Crusades. Boundary of Crusader States and the cities on routes. Dyrrachion, Adrianople, Nicaea,
Ethnic Groups in Balkans and Eastern Europe. Poles, Czechs, Slovaks, Hungarians, Romanians, Slovenes,