European exploration of Africa 1840s, so that around the midpoint of the 19th century and the beginning of the colonial Scramble for Africa, the unexplored parts were now limited to what would turn out to be the Congo Basin and the African Great Lakes. This "Heart of Africa" remained one of the last remaining "blank spots" on world maps of the later 19th century (alongside the Arctic, Antarctic and the interior of the Amazon basin). It was left for 19th-century European explorers, including those searching for the famed sources of the Nile, notably John Hanning Speke, Sir Richard Burton, David Livingstone and Henry Morton
Livingstone–Stanley Monument 10 November 1871 as clearly detailed in Stanley's book, "How I Found Livingstone". David Livingstone's journal also confirms Ujiji as the location, with an entry the day before the meeting reading "At dawn, off and go to Ujiji", a town he knew well. Livingstone then details meetings with several Arab residents of Ujiji including one who was supposed to be keeping his goods from his previous visit, before recording Stanley's arrival. From their writings, the visit to Mugere appears to be the one on 25–27 November which Livingstone and Stanley described as being one of the most hospitable they enjoyed.