The March 1918 Treaty of Brest-Litovsk put which Bolshevik promise into practice?

Correct answer: Leaving war and bringing peace

The governing concept is the Bolshevik promise of peace. After taking power in October 1917, the Bolsheviks argued that Russia should withdraw from the First World War because the conflict was causing enormous military losses, shortages, and hardship. The Treaty of Brest-Litovsk, signed with Germany in March 1918, ended Russia’s participation in the war, although the terms were severe and involved territorial losses. Thus option B is correct: the treaty implemented the promise to bring peace by leaving the war. Option A contradicts the revolutionary land policy, while options C and D have no connection with the treaty’s purpose. The date and the treaty’s withdrawal from the war are the decisive clues.