The National Society of the Daughters of the American Revolution (NSDAR) is a non-profit organization founded in 1890. It is dedicated to promoting historic preservation, education, and patriotism. Membership is open to women who can prove lineal descent from a person involved in the American Revolution, such as a soldier or a supporter of the cause. The NSDAR engages in various activities, including scholarship programs, community service, and the preservation of historical sites. The organization also supports education initiatives and promotes awareness of American history, particularly the contributions of women during the American Revolution.