Final answer:
King Charles XII of Sweden died after being shot while campaigning in Norway in 1718, an event unrelated to the Ottoman Empire battles like the Battle of Kosovo or the Battle of Varna.
Step-by-step explanation:
The query regarding the demise of Sweden's King Charles likely refers to King Charles XII of Sweden, who died in battle. The correct answer to the question of how Sweden's King Charles died is: b. shot while campaigning in Norway. King Charles XII was killed during the siege of the Norwegian fortress of Fredriksten in 1718. However, it is worth noting that this question can be misunderstood as it does not specify which King Charles of Sweden, since there have been several monarchs with that name. Charles XII, often called 'the Warrior King,' is famous for his participation in the Great Northern War. His death marked the end of Sweden's role as a major military power in Europe. It should not be confused with the events related to the Ottoman Empire, such as the Battle of Kosovo in 1389 or the Battle of Varna in 1444, where different historical figures were involved.