Treaty between France and Portugal reiterates terms of earlier
treaty. One of which is to close its ports to British, cede land to
Spain and parts of Brazil to France.
Citation:
Editors. "Treaty of Madrid confirms Treaty of Badajoz".
The Literary Encyclopedia. First published 01 March 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=13516, accessed 22 May 2013.]