Here you have it. Europe, evolving from medieval times until today. We start circa 1000 A.D with the Holy Roman Empire and Moorish Spanish (otherwise known as Al-Andalus). Then comes the fracturing of medieval kingdoms and the rise of the Ottoman Empire off in the East, until everything starts to unify again. And, at long last, the map we all recognize today.
Note: The maps used in this video come from the Centennia Historical Atlas, which has been required reading for all beginning students at the US Naval Academy for the past decade. You can purchase & download the dynamic, interactive maps right here.
via The Map Room