Editors. "Spain and Portugal sign a treaty on South America". The Literary Encyclopedia. First published 01 April 2011; last revised 30 November -1.
[http://www.litencyc.com/php/stopics.php?rec=true&UID=17583, accessed 27 April 2015.]
Spain and Portugal sign a treaty about their South American colonies. They arrange to exchange colonies in Paraguay and San Sacramento. This leads to a war in Paraguay lasting six years, and the treaty is finally abrogated in 1761.
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