William II, King (Dutch East Indies) : All Data

William II was the King of the Netherlands from 1840 to 1849. During his reign, he faced several significant conflicts, including the Belgian Revolution of 1830-1839 and the First Schleswig War of 1848-1851. The Belgian Revolution resulted in the secession of Belgium from the Netherlands, leading to the establishment of an independent Belgian state. The First Schleswig War, which began in 1848, was a conflict between Denmark and the German Confederation over the status of the duchies of Schleswig and Holstein. Although William II's reign extended beyond the mentioned period of 1845-1847, these wars were the most notable conflicts that occurred during his tenure.