evidence: Livingstone witnessed the devastation and suffering caused by the slave trade in the area to the north and east of Mweru, and his accounts did help rally opposition to it. The last of the slave trading in the area was as late as the 1890s, however. Meanwhile between 1870 and 1891, skirmishes and wars between the Yeke king Msiri and neighbouring chiefs and traders unsettled the area. Few Europeans had visited Mweru since Livingstone, until Alfred Sharpe in 1890–1 and the Stairs Expedition in 1892 both passed by on their way to seek treaties with Msiri. The Stairs Expedition killed Msiri and took Katanga for the King Leopold II of Belgium. Sharpe left one of his officers to set up the first colonial outpost in the Luapula-Mweru valley, the British boma at Chiengi in 1891. [...] The move of the boma from Chiengi to Kalungwishi had the effect of leaving the Belgian boma at Pweto a free rein at the northern end of the lake, leading a hundred years later to about 33 km² of Zambian territory next to Pweto being ceded to the DR Congo (then Zaire). See the Luapula Province border dispute for further details and references. [...] Many fishing villages dot Mweru's shores. A number are seasonal camps. The main towns on the Zambian side are Nchelenge, Kashikishi and Chiengi, and on the DR Congo side, Kilwa (the town opposite the island), Lukonzolwa and Pweto.