Input (grade 13): Facing permanent internal and external problems, the young state was unable to withstand the invasion by the Russian SFSR Red Armies, and collapsed between February and March 1921 to become a Soviet republic.
Output (grade 10): Facing permanent internal and external problems, the young state was not able to withstand the invasion by the Russian SFSR Red Armies. It collapsed between February and March of 1921 to become a Soviet republic.