In 2011,despite the sluggish growth of the US economy and the worsening debt crisis in Europe,most commodity prices rose on the world market and international liquidity was abundant,creating what the IMF called "a double tailwind" for Latin America.At the same time,however,the tailwind also poses challenges for the region's macro-economic management.Latin America's GDP growth rate in 2012 will be determined by ①whether external environment can be improved;②whether the region can take advantage of the "double tailwind"；and ③whether regional cooperation can be strengthened not only in trade but also in such areas as macro-economic management,infrastructures,transportation,customs and technological innovation.According to ECALC,in 2012,thanks to Latin America's efforts to curtail inflation and due to weak recovery of the world economy,the region's GDP growth rate will be reduced to 4.1 percent. <<