I love the hysterically tense music behind this map (a little like some of the music from
X-Men First Class -- update, apparently from
Inception); but it's pretty cool. Somewhat like the map I found tracking WW2's progress every day in the Western Theater (http://grogheads.com/forums/index.php?topic=7833.0), this one tracks national boundaries from 1140CE to the present day, one year at a time.