In 480 BC, King Xerxes of Persia sent a massive army to invade the Greek city-states. A tiny force of Greeks (the subject of the movie 300) stalled the Persian advance at the pass of Thermopylae, giving the Greek general Themistocles just enough time to launch a naval defeat of the Persians in the straits near the island of Salamis. This deterred the Persian invasion, led to the proliferation of ancient Greece, and ultimately shaped the history of the world.
That's not what's going on in this scene by Micah Beideman (Hacim Bricks), but it could very well be something just as important. Maybe that trade ship is holding the future king of a country? In any event, there's a Greek trireme involved; that was enough to kickstart me into history mode.
Note the nicely constructed mountainous background, and a pretty cool part use on the trireme: a flaming sticker from a Racers set holds a cheese slope on the front of the ship!