FILL IN THE BLANKS Stalin subjected the Soviet Union to (blank) rule as he transformed it into a world power. He oversaw the imprisonment and execution of millions during the (blank). His collectivization of farmland under a (blank) economy resulted in severe shortages of food and consumer goods. He relied on(blank)to maintain power and persecuted (blank) heavily, while restructuring the nation's education system to make the Soviet Union more economically productive.