I had that question its number 2...
answer is 1810
The battle of Alesia was fought by the army of Julius Caesar against the Gallic tribes under the leadership of Vercingetorix. It took place in 52 BC, around the Gallic oppidum of Alesia ( in Burgundy, France ). It marked the end of the Gallic independence in France and Belgium ).Answer: The battle of Alesia.
Because it is more than 5,000 years old.