Why did Russian leave the war? a
Growing discontent with the Russian government
b
Rise and return of Vladimir Lenin
c
Failure to industrialize with the rest of Europe
d
All of the above

D

Explanation:

the answer is D.

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map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground. for example, on a 1: 100000 scale map, 1cm on the map equals 1km on the ground.