大家一定要掌握关于SAT2美国历史的一些词汇，下面澳际小编为大家介绍以字母U开头的SAT2美国历史词汇表整理，词汇中涉及到了重要的历史事件、历史时期以及人物，非常全面，大家在复习SAT2美国历史时可以进行参考。

　　U

　　U-boat

　　German submarines in World War I. German U-boat attacks against French and British passenger ships carrying American citizens provoked outrage among the American public, strengthening calls for the U.S. to join the war against the Central Powers.

　　Uncle Tom’s Cabin

　　Written by Harriet Beecher Stow and published in 1852. Uncle Tom’s Cabin portrayed the evils of the institution of slavery. The novel sold 1.2 million copies in two years and reached millions more through dramatic adaptations. Uncle Tom’s Cabin aroused sympathy for runaway slaves among all classes of Northerners and hardened many against the South’s insistence upon continuing slavery.

　　Underground Railroad

　　A network of safe houses and escorts established by Northern abolitionists to foil enforcement of the Fugitive Slave Act. The Underground Railroad helped escaped slaves reach freedom in the North and in Canada.

　　Underwood Tariff

　　Pushed through Congress by President Wilson in 1913. The Underwood Tariff reduced average tariff duties by almost 15 percent, and established a graduated income tax to cover the lost tariff revenue.

　　Union

　　A general term for the United States during the Civil War. “Union” also rerred to the Northern army.

　　United Nations

　　A group of 51 countries founded the United Nations on October 24, 1945. Its central mission is to preserve peace and global stability through international cooperation and collective security. Today, the UN claims around 193 countries as members.

　　United Negro Improvement Association (UNIA)

　　Brought from Jamaica to the U.S. in 1916 by Marcus Garvey. The UNIA urged economic cooperation among African Americans.

　　Unrestricted submarine warfare

　　The German U-boat policy in which submarines attacked any ship—military, merchant, or civilian—without warning. After a period in which Germany practiced limited submarine warfare as promised by the Sussex Pledge, the resumption of unrestricted submarine warfare in January 1917 pushed the U.S. even closer to entering World War I.

　　Utopian communities

　　Small, experimental communities that sprang up in the U.S. beginning in the late 1820s. In these communities, rormers attempted to build perfect societies and present models for other communities to emulate. Most of these communities collapsed by the late 1840s.

　　以上就是以字母U开头的SAT2美国历史词汇表整理介绍。接下来澳际小编还会连续为大家介绍其它SAT2考试词汇，希望大家持续关注。澳际小编祝大家都能取得优异的SAT2考试成绩!

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