The spent nuclear fuel is easy and safe to dispose of is not a potential problem of using more nuclear energy.
This isn’t a potential problem because the disposal is straightforward and can be done safely almost anywhere. However, final disposal would be best if done in a deep geological area.
The central powers consisted mostly of nazi Germany, Italy, Japan, Romania, Bulgaria, and Hungary.
Allied powers consisted of United States, Great Britain, Russia (USSR), France, Poland... pretty much the rest of the world. (This is for WW2 if you want WW1 message me or comment on this). Hope this helped!
The answer is B. Russia is facing a seemingly unstoppable army but will be victorious. -Apex