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精编密训教材，分阶快递。Dollar diplomacy
William Howard Taft’s foreign policy. Taft sought to address international problems by extending American investment overseas, believing that such activity would both benefit the U.S. economy and promote stability abroad.
Dorothea Dix
A Massachusetts schoolteache. Dix studied the condition of the insane in poorhouses and prisons. Her efforts helped bring about the creation of asylums, where the mentally ill could receive better treatment.
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