Diseases introduced by the Columbian Exchange caused a sharp decline in population levels in the Americas beginning in the 15th century. The correct option among all the options given in the question is option "C". The natives never faced the diseases that attacked them and so they did not have any cure for them. <span />
Elizabeth Cady Stanton, Susan B. Anthony, Lucy Stone, and Sojourner Truth.
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<span>He refused to accept the secession of states from the Union</span>
