Sub-Saharan Africa experienced imperialism in the 19th century as European powers took control of much of the continent. Explorers like David Livingstone and H.M. Stanley paved the way for King Leopold II of Belgium to establish the Congo Free State and seize control of the Congo. At the Berlin Conference, European nations divided up Africa among themselves, leading to new imperial conquests supported by railways, steamships, and mining. This period saw conflicts like the Boer Wars in South Africa over gold and diamonds and the rise and fall of leaders like Shaka of the Zulus, while the imperial systems established law and order but also utilized forced labor and struggled with ending slavery.