History day? Wow, that sounds dull.
Wow, that is sad man. You must have had either lousy teachers, or *shudder* American History.
History is a great source for some awesome stuff. The Roman Empire, World War II, the Greeks and the earliest emergence of culture. There are even some great funny moments in history.
Did you know...
...that at one point, the British troops across the Delaware River were able to see George Washington's men in plain sight, just days before they sailed across and killed them all in their sleep (on Christmas, no less, if I recall). The reason the British all died that week is because their leader refused to fire on Washington because he was standing with his back to the river and was unaware that the British were there.
...A nation state called Carthage, run by a conquest-centric leader named Hannibal, planned to attack and destroy Rome in its early days. The Rome/Carthage conflicts went back and forth and occured early in the Empire's history so they are not a huge part of its legacy...mostly because of the way they ended, abruptly and stupidly. See, in Carthage, they had war elephants. The Romans had never seen an elephant before, and of course **** all over themselves when faced with the creatures and their riders. So convinced was Hannibal that his war elephants could best Rome's armies--which even then was a powerful empire--he set out to take his armada directly to the Roman capitol. Unfortunately he never accounted for the distance or the treacherous mountainous route he had to take; along the way, almost all of his elephants died, as did most of his army. Carthage lost before they ever even got to the lands of Rome.
The early Greeks devloped boats and had excessive naval wars despite a lack of gunpowder. This was compounded by an invention, I forget what it was called, but it was basically a bridge that would be dropped from one boat onto an opposing boat, with spikes that attached it to the enemy's floorboards. From there, the Greek soldiers would turn the naval battle in their favor by making it a ground war.
The French Revolution is pretty crazy too. They actually had scientists using beheadings to try and determine how long your head stays alive for after it is severed...they claimed one of the kings, I think Louis XIV or so, looked around and blinked several times as well as moving his mouth...after they severed his head and held it up to the crowd.
World War II...nuff said.
Modern Russian History is interesting, as well.
This is of course not including the old west, the renaissance, World War I, prohibition, or any other of a million things that have happened.
There are literally a million awesome things you could do a project of this type on. Good luck. I'd do Rome...lots of great stories there.