What was the major women's rights victory that occurred in 1920

19th Amendment (1920) guaranteed women the constitutional right to vote

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.