The Progressive Era in the United States saw the broadening of the voting franchise primarily through the ratification of the 19th Amendment in 1920, which granted women the right to vote. This was a significant milestone in the women's suffrage movement, which had garnered momentum throughout the late 19th and early 20th centuries. Progressive reformers worked tirelessly to advocate for gender equality in voting rights, emphasizing the importance of women's participation in the democratic process. The amendment's passage led to increased political engagement among women and marked a significant step toward greater social and political equality.