The European Union and South American bloc Mercosur signed a long-delayed free trade agreement on Saturday in Asuncion, Paraguay, creating one of the world's largest free trade zones. The agreement slashes more than 90% of tariffs between the EU and the Mercosur countries of Argentina, Brazil, Paraguay and Uruguay, though some cuts will be phased in over 10 to 15 years.EU and Mercosur sign landmark trade dealTo view this video please enable JavaScript, and consider upgrading to a web browser tha...