When was the battle of Waterloo?

The Battle of Waterloo was in 1815. It was fought in the present-day province of Waterloo Brabant, Belgium.

Explanation:

The Battle of Waterloo is acknowledged as the end of the Napoleonic Wars (1803-1815), the set of wars led by Bonaparte in his expansionist attempts in Europe. He aimed to establish France hegemony on the continent and to spread the French Revolution ideals throughout the region.

It was Bonaparte's preparation in 1803 for these future wars that led him to sell the French territories in North America to the newly independent United States. The event became known as Louisiana Purchase.