I want to know the answer to the following question:
Starting in what year was the Communist Party outlawed in Yugoslavia?
All the background I'm provided with is that "As the Communist Party was outlawed in Yugoslavia starting on 30 December 1920, Josip Broz took on many assumed names during his activity within the Party, including "Rudi", "Walter", and "Tito."". Is that enough to answer the question?
Answer: yes