Complex sentence: As a result of Sweden's support of France's enemies during the Napoleonic Wars, Guadeloupe was ceded to Charles XIV John, not the state, however a year later the island was given to France by the Treaty of Paris.
Split into simpler sentences: As a result of Sweden's support of France's enemies during the Napoleonic Wars, the island of Guadeloupe was ceded to king Charles XIV John personanly, not to his Swedish state. However a year later the island was given to France by the Treaty of Paris.