Final answer:
Mary Seymour's central argument is that full citizenship for women is crucial for the advancement of society, as the women's suffrage movement emphasized the importance of women's rights in contributing to societal reform.
Step-by-step explanation:
Mary Seymour's central argument revolves around the idea that full citizenship for women is not only a matter of individual rights but also essential for the betterment of society as a whole. This argument is rooted in the fact that during the women’s suffrage movement, women like Elizabeth Cady Stanton and Susan B. Anthony fought ardently not just for the right to vote but also for broader civil liberties and social reforms. They believed that with full citizenship, women could more effectively contribute to the political discourse and engage in social reforms that would benefit the entire community. The pursuit of this goal was reflected in diverse actions and legal battles, such as the presidential election of 1872, where Susan B. Anthony and other suffragettes argued for their voting rights, and the case of Minor v. Happersett in which the Supreme Court ruled explicitly on the matter of women's suffrage. Ultimately, the elevation of women to full citizens would require explicit legal changes, something realized by activists who challenged both the conservative and radical aspects of society's views on gender roles.