Loved it.
I like how you put the world's history inside a crystal ball. Reminds me slightly of that Star Trek: The Original Series episode involving the Guardian of Forever.
The number you used to represent the year confused me at first as to its significance. Perhaps you could make it clearer with BCE and CE? or BC and AD, whatever suits.
I'm curious about a couple of things, though... Why represent the start of the First World War with an American recruitment poster? The Americans didn't join that war until 1917.
I immediately thought of The Beatles when I saw the flash title, though I notice you didn't use their version of the song. Not that I've got a problem with the version you used.
Overall I enjoyed what I saw. Well done. :)