Here is an interesting video that shows 1000 years of European political history in a little over 5 minutes. You can easily see the ebb and flow of empires throughout the ages.
Unfortunately, it does not have a timeline on the screen so it is a little tricky to see exactly when certain events happened. For example, Napoleon Bonaparte conquered much of Europe in the early 19th century, so that event is shown towards the end of the video clip. However, there is no indication on the video exactly when that event took place (from around 1800 to 1815 at the Battle of Waterloo).
Hat tip: Tigerhawk