European history and population mapped by year
Today's maps found on the interwebs. 
Cottereau: This video shows the borders and populations of each country in Europe, for every year since 400 BC. Vassal states and colonies are not included in the count of a country's population." What a mess! One thing I learned is how sparsely-populated Britain was in the Roman age.
Found at https://boingboing.net/2018/01/30/european-history-and-populatio.html
