The battle of Waterloo, fought on 18th June, 1815 was the last battle fought by Napoleon. The basic cause of this battle was Napoleon's atrocities in Europe. Countries like UK, Prussia etc formed the Seventh Coalition to oppose him and they wanted to attack France to out throne him. However, Napoleon attacked them in Waterloo instead, as he hoped this would destroy them. But it resulted in his defeat. For details see the link below:
en.wikipedia.org
en.wikipedia.org
