Answer:
a. Totalitarianism
b. Joseph Stalin
Step-by-step explanation:
You included no options but based on my answer to the second question, I can surmise the first.
A Totalitarian government is a type of unlimited government because in this system, all the power is centralized and vested in the hands of the dictator who would demand absolute loyalty from the nation. These governments are often rife with human rights abuses on a massive scale.
Joseph Stalin led the Soviet Union under this type of government and elevated himself to the highest position possible. He did not like dissent and estimates of 'dissenters' who were executed go into the millions. The Soviet Union under him was a police state where every activity was monitored and a wrong word could lead to death.