Task: Text Categorization
Input (English): This man sent Henry Shelton Sanford to lobby Congress and his father invested in a failed settlement at Santo Tomas de Castilla. This brother of Empress Carlota was made Duke of Brabant at the age of nine. After the death of his wife, this man married his mistress Caroline Lacroix and survived an assassination attempt by the Italian anarchist Gennaro Rubino. One of this ruler's lieutenants led the Emin Pasha Expedition, and in 1889 this ruler outlined a plan to defeat Arab slavers through development. Mark Twain and Sir Arthur Conan Doyle notably criticized this man's resulting project, which relied on the brutal Force Publique. The Casement Report detailed the horrors inflicted on workers who failed to meet rubber quotas for this ruler, who sent Henry Morton Stanley to Africa. For 10 points, name this King of Belgium from 1865 to 1909 and ruler of the Congo Free State.
Output (English): History