Women's suffrage in the U.S. became law in 1920 with the ratification of the 19th Amendment. This amendment granted women the right to vote, marking a significant milestone in the long struggle for gender equality. Advocacy for women's suffrage began in earnest in the mid-19th century, led by activists such as Elizabeth Cady Stanton and Susan B. Anthony. The passage of this amendment resulted from decades of grassroots organizing, protests, and advocacy, enabling women to participate more fully in democracy and politics, and paving the way for future advancements in women's rights.