Why does Anthony read the preamble to the Constitution in her speech "Woman's Rights to the Suffrage"?

Anthony reads the preamble to point out that the Constitution begins with “We the People” and promises to secure liberty and justice. She argues that women are part of the people, so the nation’s founding purpose should include protecting their rights, including the right to vote. The preamble is not being used to argue that states should decide voting rights or that she rejects the founding documents.

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