Hmmm...
Some of your informations is flawed..
While many of those countries were invaded, some had very much resistance, and I wouldn't agree that England was invaded as it was the frontline for the allied forces the entirety of the war...
Also, if had enough slideshows from An inconvieniant truth.. Zing.. no but thats an err important movie i guess.
Enough of that!
An animation on the war would get more accross, and its not just the US that stopped Germany, that undermines the allied forces alot, what about Canada, England and all the other countries in resistance, don't forget about them...