Editors. "Britain and USA agree to share a proposed Panama canal". The Literary Encyclopedia. First published 30 December 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=18235, accessed 19 June 2013.]
Britain and the USA sign the Clayton-Bulwer agreement. In this treaty, both states agree not to obtain exclusive control of a proposed canal between the Pacific and Atlantic oceans.