@yogthos USSR achieved unprecedented *growth* and only *over some period* because it started from very low pre-revolutionary level. Later its economy stagnated and eventually bankrupted. At peak, GDP per capita in USSR was 1/3-1/2 of Western. Its economy was also extremely unbalanced, with absurd overgrowth of heavy industry over light industry and services. And for most of the time it depended on loans from the West, ending with $76 billion debt in 1991.