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11حسب Slotkin, Richard, 1942-“...United States Territorial expansion Historiography....”
منشور في 1998
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12منشور في 1956“...United States Territorial expansion Historiography....”
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15“...United States Territorial expansion....”
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17حسب Bintliff, Amy Vatne“...United States Territorial expansion Study and teaching (Secondary)...”
منشور في 2011
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