Susan B. Anthony is known for her advocacy of women's suffrage, a major social movement aimed at securing the right to vote for women in the United States. Throughout her life, she worked tirelessly to champion women’s rights and equality, organizing events, and petitioning for legal reforms. Anthony co-founded the National Woman Suffrage Association in 1869 and played a significant role in the fight for the 19th Amendment, which was eventually ratified in 1920, granting women the right to vote. Her efforts laid the groundwork for future generations in the ongoing struggle for women's rights.