Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.

Let me give you an example: Who did the Han Chinese want to help the Khitan no I mean the Mongols fight?
The answer to this example can be: Who did the Han Chinese want to help the Mongols fight?
Here is why: The input initially means Khitan and then changes to Mongols, hence this is correct.

OK. solve this:
Who had established the right to limited self-determination for oh no Russian empire to its former glory prior to 1921?
Answer:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Who had established the Russian empire to its former glory prior to 1921?