Henry Morton Stanley the source of the Nile. Between 1875 and 1876 Stanley succeeded in the first part of his objective, establishing that Lake Victoria had only a single outlet – the one located by John Hanning Speke on 21 July 1862. If this was not the Nile's source, then the massive northward flowing river called by Livingstone, the Lualaba, and mapped by him in its upper reaches, might flow on north to connect with the Nile via Lake Albert and thus be the primary source. It was therefore essential that Stanley should trace the course of the Lualaba downstream (northward) from Nyangwe,
Unyamwezi would be held at Tabora, then sent down to the coast in small groups for onward shipment. The first Europeans to reach the region were Richard Francis Burton and John Hanning Speke, who had been sponsored by the Royal Geographical Society and the British government to investigate the great Lake Uniamési said by German missionaries to lie in the region and determine if it was the source of the Nile. Burton and Speke reached Zanzibar on 20 December 1857, visited Johannes Rebmann (who had reported the lake) at his Kisuludini mission station, and paid a visit to Fuga, capital of