A market where salt could be exchanged for other goods was established at Ujiji on Lake Tanganyika in Tanzania in 1840. Tippu Tip and Ruwaliza established themselves there in 1881.[9] From 1883 Rumaliza was the leader of the Swahili community at Ujiji.[6] Rumaliza and his Magwangwara auxiliaries occupied five posts on the northeast coast of Lake Tanganyika between 1884 and 1894. He launched a series of raids into the mountains and up the Rusizi River valley as far as Lake Kivu.[10]