Read this: The RSFSR was established on November 7, 1917 (October Revolution) as a sovereign state. The first Constitution was adopted in 1918. In 1922 the Russian SFSR signed the Treaty on the Creation of the USSR.
Now answer this question, if there is an answer (If it cannot be answered, return "unanswerable"): The Treaty on the Creation of the USSR was not signed in what year?
unanswerable