History of Africa Other significant European explorers included Heinrich Barth, Henry Morton Stanley (coiner of the term "Dark Continent" for Africa in an 1878 book), Silva Porto, Alexandre de Serpa Pinto, Rene Caille, Friedrich Gerhard Rohlfs, Gustav Nachtigal, George Schweinfurth, and Joseph Thomson. The most famous of the explorers was David Livingstone, who explored southern Africa and traversed the continent from the Atlantic at Luanda to the Indian Ocean at Quelimane. European explorers made use of African guides and servants, and established long-distance trading routes were used. Missionaries attempting to spread Christianity also increased European knowledge of Africa. Between 1884 and 1885, European
Colonization of the Congo buying sovereignty in exchange for bolts of cloth and trinkets; playing one tribe off another; and if need be, simply shooting an obstructive chief and negotiating with his cowed successor instead. However, as he approached Stanley Falls at the junction between the Congo proper and the Lualaba (close to the general vicinity of Central Africa where he had found Livingstone six years before), it soon became clear that Stanley's men were not the only intruders. Tippu Tip, the most powerful of the Zanzibari slave traders of the 19th century, was well-known to Stanley, as was the social chaos and devastation