A joint force of the British and Portuguese defeats the Spanish at
Montes Claros. A further victory at Villa Viciosa secures
Portugal's independence. It had been subsumed within the Spanish
monarchy since 1580, when Philip II seized the vacant throne.
Citation:
Editors. "Spanish are defeated by the Portuguese and British at Montes Claros".
The Literary Encyclopedia. First published 01 April 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=16508, accessed 21 May 2013.]