南方共同市场是4个南美洲国家(阿根廷、巴西、巴拉圭和乌拉圭)根据《亚松森条约》成立的一个经济合作组织。4国的领土总面积为1200万平方公里,占拉美总面积的60％;人口近2亿,占拉美总人口的44％;年国民生产总值7353亿美元,占拉美国家国民生产总值的55％。就贸易额和人口而言,南方共同市场被认为是世界上第四大经济一体化组织,仅次于 MERCOSUR is an economic cooperation organization established under the Asuncion Treaty by four South American countries (Argentina, Brazil, Paraguay and Uruguay). The total land area of ​​the four countries is 12 million square kilometers, accounting for 60% of the total area in Latin America; the population is nearly 200 million, accounting for 44% of the total population in Latin America; the annual GNP is 735.3 billion U.S. dollars, accounting for the total GNP of Latin American countries 55%. In terms of trade volume and population, MERCOSUR is considered the fourth largest economic integration organization in the world, second only to