Was the Prohibition of alcohol a good idea?

Yes

Explanation:

prohibition of alcohol (1920–33) the “noble experiment” was undertaken to reduce crime and corruption, solve social problems, reduce the tax burden created by prisons and poorhouses, and improve health and hygiene.

 No it was not because at least half of the population wanted to drink still and the other half wanted it gone because it began a surge of smuggling alcohol into the country.

short answer no because people began smuggling alcohol in from other counties.

the event is known to be the soviet union.