What was one major similarities between the soviet union under joseph stalin and nazi germany under adolf hitler

I would say D is the best answer because they were both totalitarian dictatorships.

   D. Both countries persecuted any person who criticized the government

Explanation:   Both the Soviet Union under Stalin and the Nazi Germany under Hitler were totalitarian states with a cult of personality, an undivided leader. This meant that anyone would criticize the government and such a leadership would be fiercely persecuted. The closest associates of these dictators would not be spared if they were found to even think differently.

On the other hand, while Stalin was communist, Hitler was a fierce opponent of communism and any form of communist association and action. Hitler was a proponent of healthy labor for the benefit of the nation, but not in terms of workers' association and organizations.

you can't, there's no way sorry