July 4, 1919 saw Congress pass the 19th amendment (although it wasn't officially ratified until Aug 20, 1920), which gave the vote to which previously disenfranchised group?
Nineteenth Amendment to the United States Constitution Since the 1860s, an increasing number of states had given women the right to vote, but several states still denied women the right to vote at the time the amendment was ratified. The Nineteenth Amendment was originally introduced in Congress in 1878 by Senator Aaron A. Sargent. Forty-one years later, in 1919, Congress submitted it to the states for ratification. It was ratified by three-fourths of the states a year later, with Tennessee's ratification being the last needed to add the amendment to the Constitution. In "Leser v. Garnett" (1922), the Supreme Court rejected claims that the amendment was unconstitutionally
Nineteenth Amendment to the United States Constitution came from Southern Democrats, a trend which remained consistent with Tennessee as the last state to pass the amendment, during a special session right before the ratification period was to expire. On August 18, 1920, Tennessee narrowly approved the Nineteenth Amendment, with 50 of 99 members of the Tennessee House of Representatives voting yes. This provided the final ratification necessary to add the amendment to the Constitution. The Congress proposed the Nineteenth Amendment on June 4, 1919, and the following states ratified the amendment. Ratification was completed on August 18, 1920, and the following states subsequently ratified the amendment: The