The president sought to galvanize the nation around a single vision by using a metaphor from a time when the United States was losing the race to space. But is this really America's "Sputnik moment"?
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Why did Lincoln defend slavery so vigorously in his inaugural address, thus alienating abolitionists and progressives in his party?
The Library of Congress on Wednesday unveiled three photo negatives -- long mislabeled -- of the crowd that gathered at the Capitol for Abraham Lincol...
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