Ratification of the 19th amendment
Map shows when the states ratified the 19th amendment to the U.S. Constitution giving women the right to vote. The approval of thirty-six states was needed to ratify the amendment; Tennessee became the thirty-sixth on August 18, 1920, fourteen months after Congress had passed it. The remaining states that were in the United States in 1920 have all since ratified the 19th amendment. Three more states -- Connecticut, Vermont, and Delaware -- ratified the amendment within three years after its initial passage. The remaining states were all in the South. Maryland ratified the amendment in 1941, and Alabama and Virginia followed in the 1950s. Florida, South Carolina, Georgia, Louisiana, and North Carolina ratified the amendment between 1969 and 1971. Mississippi became the last state to do so, in 1984.
Agan, Kelly. "19th Amendment State Ratification Map." Map. 2020.
Public Domain
Public Domain is a copyright term that is often used when talking about copyright for creative works. Under U.S. copyright law, individual items that are in the public domain are items that are no longer protected by copyright law. This means that you do not need to request permission to re-use, re-publish or even change a copy of the item. Items enter the public domain under U.S. copyright law for a number of reasons: the original copyright may have expired; the item was created by the U.S. Federal Government or other governmental entity that views the things it creates as in the public domain; the work was never protected by copyright for some other reason related to how it was produced (for example, it was a speech that wasn't written down or recorded); or the work doesn't have enough originality to make it eligible for copyright protection.