Editors. "Anglo-Portuguese agreement on Zambesi and the Congo". The Literary Encyclopedia. First published 30 December 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=19043, accessed 25 May 2013.]
Britain and Portugal sign an agreement on the Zambesi. The Congo grants Britain the control of the Lower Zambesi River, and the right to colonise central territory up to the Congo itself.