On 30 October 1882
Edmond Hanssens reached
Bolobo on the
Congo River, where he negotiated for ten days with Kuka, King of the Bayanzi, who then signed a treaty that placed his lands and people under the protection of the
International African Association. Hanssens' crews at once began to build a station. Hanssens sent the
Eclaireur back to
Léopoldville to collect supplies and to bring back Lieutenant Orban to take command of the new station. Hanssens made treaties with the Congolese people at the mouth of the Kasai and acquired land for the
Kwamouth post. At the end of August 1883
Charles Liebrechts visited
Kwamouth on the way up the Congo River to help
Êmile Brunfaut in Bolobo station in Bayanzi country, which had been burned down. In November 1883 Liebrechts returned seeking reinforcements and ammunition after Bolobo had been burned again. On 18 January 1884, soon after the third fire at Bolobo,
Henry Morton Stanley arrived on his way down from the
Stanley Falls. Hanssens returned to Bolobo on 3 April 1884, where lieutenant
Charles Liebrechts had now formed a good relationship with the Bayanzi. They continued upstream, founded the N'Gandu post and made treaties with the chiefs along the river. Attilio Pécile, who was associated for three years with
Giacomo di Brazzà in his exploration of the region north of the Congo, wrote in 1887 that the Bakales, Fans, and Bayanzi were all still pagans, and mostly cannibals. He said, "The Bayanzi, who have acquired the ascendency along the right bank of the Lower Congo, seem to have come originally from the same regions as the Fans, whom they resemble in physical appearance, character, language, and usages. But while the latter are "land-lubbers," displaying absolute horror of the water, the Bayanzi have always been great fluvial navigators, so that their original home may have been the Upper Ubangi, slowly advancing down this great artery to its junction with the Congo."
Alexandre Delcommune encountered a convoy of Bayanzi pirogues in March 1888. He wrote, ==Colonial exploitation==