In what becomes known as the Trent affair, also known as the Mason
and Slidell Affair, Confederate Commissioners to Great Britain and
France are seized from a British ship by Unionists, but
subsequently released after Britain protests.
Citation:
Editors. "Trent affair: Confederate Commissioners to Europe are captured by Unionists".
The Literary Encyclopedia. First published 30 December 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=18420, accessed 22 May 2013.]