>In the 1950s, the Soviet economy grew faster than that of any other major country barring Japan. I'd like to read more about what was happening then, was it largely military investment?
So much destruction post 1940s coupled with slave labor (local political prisoners and German prisoners of war) leads to roads and steel plants being built quickly. The population though lived on near nothing till the 60s.
Slave labor in the post-renaissance era cannot compete with other types of labor.
If it could then the South would have fared much better in the US Civil War and everyone and their grandmother would have industrialized economies in Africa by now. Or at the very least Ethiopia should have, which was never a colony of anyone for any meaningful period of time.
Not to mention, the North Korean Famine of 1994-1998, in which 3% of population died, would not have been a thing.