Editors. "Ostend Manifesto". The Literary Encyclopedia. First published 01 March 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=10919, accessed 18 April 2014.]
American ministers James Buchanan, John Y. Mason, and Pierre Soulu, meeting in Belgium, urge the United States to seize Cuba militarily if Spain refuses to sell the island. Many Northerners regarded this as a plot to extend slavery.