Charles XII of Sweden
During his time as a king, he tried to expand Sweden's empire. He took part in the Nordic War (1700-1721), in which his enemies were Denmark, Poland and Russia. England and the Netherlands supported him and his armies won over the Danes during a sea battle.He also beat Peter I Russian Tsar.
Charles attacked Russia again in 1707 with the Ukrainian leader, hetman Mazeppa. After more than a 1000 km walk in 1709, the Swedish king suffered a defeat from the Tsar. Charles had to flee to Turkey. He could only return to Sweden in 1714. He tried to compensate for the lost territories by a war against Norway. During the battle he was shot in the head and died in 1718. The wars of Charles XII made Sweden weaker.