The US prairies or Great Plains included a large north-south swath of level or slightly rolling grasslands east of the Rockies from central Texas to Manitoba in Canada and included at least parts of Montana, Wyoming, /Colorado and New Mexico, North Dakota, S. Dakota, Nebraska, Kansas and Oklahoma.
The Reason prohibition directly led to organized crime was because the public demand for illegal alcohol was increasing, therefore people such as Al Capone would organize secret bars called “speakeasies”
