What did the 18th amendment to the U. S. Constitution accomplish

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.