The significance of the 19th Amendment to the U.S. Constitution, ratified in 1920, lies in its establishment of women's suffrage in the United States. This amendment granted women the legal right to vote, a milestone achievement in the long struggle for gender equality and civil rights. The movement for women's suffrage, which gained momentum in the late 19th century, was marked by activism, protests, and advocacy by notable figures such as Susan B. Anthony and Elizabeth Cady Stanton. The amendment represented a fundamental shift in American democracy, expanding its inclusivity and paving the way for further advancements in women's rights and societal roles.