Napoleon was a military leader, Emperor of the French, and governor of the kingdom of Italy. He invaded and conquered several countries.
In June 1815 he invaded Belgium, an important piece of history since it influenced for the Battle of Waterloo to happen, in which Napoleon had to face the other European empires.
In the Napoleonic Wars Napoleon confronted the Kingdom of Great Britain but after years of war and huge amounts of resources invested from all the nations involved, Napoleon was not able to conquer them.
Correct answer is B