What famous mob boss aka Scarface was convicted of tax evasion in 1931?

Al Capone?

Right.

Name the 3 leaders of the Allied Powers during World War II. They include the leaders of the U.S., Great Britain and Russia

http://en.wikipedia.org/wiki/Yalta_Conference

The famous mob boss, commonly known as Scarface, who was convicted of tax evasion in 1931 was Al Capone. Al Capone was a prominent American gangster during the Prohibition era and was the leader of the Chicago Outfit, which was involved in illegal activities such as bootlegging, gambling, and prostitution.

To find this information, you can use search engines like Google or Bing and enter the query "famous mob boss convicted of tax evasion in 1931." One of the top search results will mention Al Capone's name and his conviction for tax evasion. Additionally, you can also use online databases, books, or even documentaries on organized crime to find more details about Al Capone and his criminal activities.