Vietnam’s lawmaking body, the National Assembly, unanimously ratified a landmark 11-country deal that will slash tariffs across much of the Asia-Pacific.One of the region’s fastest growing economies, its status cemented by strong exports and robust foreign investment, the Southeast Asian nation is believed to be among the largest beneficiaries of the trade deal.The ratification makes Vietnam the seventh country to have passed the Comprehensive and Progressive Agreement for Trans-Pacific Partnership (CPTPP), the National Assembly said in a statement.