How did the "Great Purge" work in Stalin's favor to gain control of Russia?

The Great Purge, also known as the “Great Terror,” was a brutal political campaign led by Soviet dictator Joseph Stalin to eliminate dissenting members of the Communist Party and anyone else he considered a threat. Although estimates vary, most experts believe at least 750,000 people were executed during the Great Purge, which took place between about 1936 and 1938. More than a million other people were sent to forced labor camps, known as Gulags. This ruthless and bloody operation caused rampant terror throughout the U.S.S.R. and impacted the country for many years.

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Explanation:

the exclusive possession or control of the supply or trade in a commodity or service.

it broke up the ottoman empire (just a small fact) and the turkish leaders lost many soldiers.