Freed slaves from the U.S.
Willingness to work the land for Europeans
The 18th amendment outlawed the selling and making liquor in the United States in the 1920's. Although this was established, many people still consumed pre-purchased liquor,made it themselves, or famous gangsters like Al Capone sold it illegally in secret bars. Overall, it didn't really accomplish anything because even though it wasn't legal, people were drinking more than ever and crime increased majorly in cities.
Because of industrial revolution, women have the opportunities to: A. Work outside the home in factories
Prior to industrial revolution, almost all jobs that exist in society utilize physical strength, which basically made women became less productive compared to men. After the industrial revolution, machinery replaced these physical works. This opened up paths for women to work outside the home in factories.