Why was it important that the Soviet Union fought with the Allies in World War 2?

It is in large measure due to the bloodbath between Germany and the USSR that the allies were able to win WWII. For the sake of argument if the USSR were neutral the defeat of Germany would have taken much longer and entailed a much greater US effort.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.