Which of the following statements best explains why russia left world war I before it ended?
A. Germany defeated and advanced into Russian territories
B. tsar Nicholas II ended the war to prevent a revolution
C. a Russian military-led cop ended the war in eastern europe
D. the damage of the war caused an internal revolution
D. the damage of the war caused an internal revolution
This statement best explains why Russia left World War I before it ended. The internal revolution in Russia, including widespread discontent among the population, economic hardships, and military losses, was a significant factor in Russia's decision to end its involvement in the war.