Question

which most accurately analyzes the impact that world war i had on the internal politics of russia?
the loss of life and food shortages caused widespread social discontent, which forced the czar to abdicate.
the devastating losses to ottoman forces led to the establishment of islamic law in rural parts of russia.
the allied alliance system collapsed and allowed the bolsheviks to come to power.
the russian victories along the eastern front gave the russian provisional government legitimacy.

Explanation:

During World War I, Russia faced significant losses and hardships. The loss of life and food shortages led to social unrest. This unrest ultimately forced the czar to abdicate, which was a major shift in Russia's internal politics. The other options are incorrect as the Ottoman - Russian conflict was not the main driver of internal political change in Russia, the Allied alliance system did not collapse in a way that directly led to the Bolsheviks coming to power in this context, and Russia did not have significant victories on the eastern front that gave the Provisional Government legitimacy.

Answer:

The loss of life and food shortages caused widespread social discontent, which forced the czar to abdicate.