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kaolinite mining in the united states
Economy of the United States - Wikipedia, the free ...
The United States of America is the world's largest single national economy.[21] The United States' nominal GDP was estimated to be $17.295 trillion as of Q2 2014,[22 ...
Great Depression in the United States - Wikipedia, …
The Great Depression began in August of 1929, when the United States economy first went into an economic recession. Although the country spent two months with ...
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