题目内容
By 1965, a majority of US workers held white-collar rather than blue-collar jobs.
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Many urban Americans, particularly Blacks and Hispanics, found the postwar prosperity inaccessible to them.
The American West is now an important region for corn and wheat.
While manufacturing giants such as IBM and General Electronic enjoy worldwide reputation as theh pillars of the American economy, the US economy is by no means one dominated by giant corporations.
As the number of workers employed in the traditional manufacturing industries has declined, union membership has dropped in recent years.
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