Which methods did stalin use to gain power? check all that apply.
creating a secret police force
exiling political opponents
murdering political opponents
creating a single-party state
persecuting ethnic groups

Stalin used a multitude of methods to secure power. Regarding what you said he used all of those. He created a secret police to consolidate power, murdered rivals and party members, a one party state to eliminate the democratic process, and finally persecuted Jewish doctors

Treated as a slave is cruel and harsh