代下，拼音dài xià，出处《魏书·薛虎子传》。
在社会历史方法的出现的刺激下，新一代的历史学家发现联邦主义者很有意思，因为他们表现出了联邦内部的弱点。
Spurred by the advent of social historical methods, a new generation of historians found Unionists interesting as manifestations of the Confederacy's internal weaknesses.
这些发展被大萧条恶化了，它始于1929年，一直延续到20世纪30年代。1929年，在赫伯特·胡佛总统的领导下，联邦农业委员会成立了。
These developments were made worse by the Great Depression, which began in 1929 and extended throughout the 1930s. In 1929, under President Herbert Hoover, the Federal Farm Board was organized.
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