I am looking for a map which would give an indication of how much territorial conflict there was in a given area. One way I imagined one could do it is to look at how territorial states (in the period where those make sense) have changed over the time. Does anybody know if maps like this exist or suggestions on how to make it in a meaningful way?
Edit notice: Thanks for all your very good comments - I have tried to address them.
Old Question: I am looking for a map of Europe which displays the number of times every area was taken over since year 1000. For example the current England was only taken over once in 1066 and therefore that area should have the value 1 etc. Do you know if such a map exists?