Final answer:
Leopold removed responsibility for the Congo Free State when public outcry and international pressure forced the Belgian Parliament to strip him of the colony in 1908.
Step-by-step explanation:
Leopold finally removed responsibility for the Congo Free State when public outcry and international pressure forced the Belgian Parliament to strip him of the colony in 1908, after decades of brutal rule. Leopold's personal fiefdom was taken over by the Belgian government and placed under direct administration.