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
Expansion of Jerusalem in the 19th century Expansion of Jerusalem in the 19th century The expansion of Jerusalem in the 19th century, also referred to as the departure from the walls, was the process of building new residences outside of the Old City walls, and shifting the city center to the new neighborhoods. The process started in the mid-19th century and by the early 20th century had entirely transformed the city. Prior to the 19th century, the main built up areas outside the walls were the Mosque of David (today a synagogue) and the village of Silwan. In the mid 19th century, with an area of only