The Berlin Conference (known as the ‘West Africa Conference' or the ‘Congo Conference') convened in November 1884, and remained in session until February 1885. The General Act of the conference made no mention of Togo, Kamerun or any specific territory other than the basin of the Congo. Nevertheless the conference did confirm the steps required in order for the Powers to recognise each others' territorial claims in West Africa - steps which Nachtigal had followed. Along with a number of claims by other Powers, German claims in West Africa were thus effectively recognised by means of the conference. In parallel with the main conference sessions, discussions were pursued which were intended to avoid possible conflict by tidying up overlapping claims and starting to define borders. Just two months after the Berlin Conference, on 22 April 1885, Germany concluded a treaty with England which established the borders around Mount Cameroon. The following year, on May 6, 1886, another treaty extended the frontier to the east. An agreement with France on December 24, 1885 fixed the Campo River as the southern border of Kamerun.