Abstract This introduction explores the historical changes in the trade policies of the United States (U.S.), namely, the shift from the support of multilateral rules to the embracement of regional trade agreements and provides an overview of the political and economic considerations behind the conclusion of the major U.S. free trade agreements.

中文翻译：

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美国自由贸易协定简介

摘要本导言探讨了美国贸易政策的历史变化，即从多边规则支持转向接受区域贸易协定的转变，并概述了缔结《美国贸易协定》背后的政治和经济考虑。美国主要的自由贸易协定。