How to use citation info. (on Archives.gov). Passed by Congress June 4, 1919, and ratified on August 18, 1920, the 19th amendment granted women the right to vote. The 19th amendment guarantees all American women the right to vote.Achieving this milestone required a lengthy and difficult struggle; victory took decades of agitation and protest.n May 21, 1919, the House of Representatives passed the amendment, and 2 weeks later, the Senate followed. When Tennessee became the 36th state to ratify the amendment on August 18, 1920, the amendment passed its final hurdle of obtaining the agreement of three-fourths of the states.