Answer:
The Gulag
Step-by-step explanation:
The Stalin era was one of rapid economic development for the Soviet Union. State propaganda lauded the huge infrastructure projects that were put up at breakneck speed, transforming a rural, agricultural empire into an industrial power. But many showcase projects — such as the Moscow-Volga Canal, the Belomor Canal, and the Trans-Siberian Railroad — were built partly or entirely by prisoners in Stalin's notorious Gulag, a network of prison camps set up across the country.