(A) ** Russia
(B) Germany
(C) United States
(D) Great Britain
EXPLANATIONS BELOW
Concept note-1: -On March 3, 1918, in the city of Brest-Litovsk, located in modern-day Belarus near the Polish border, Russia signs a treaty with the Central Powers ending its participation in World War I.
Concept note-2: -Answer and Explanation: Russia withdrew from the war after the November Revolution of 1917 overthrew Tsar Nicholas.
Concept note-3: -Under the treaty, Russia had to turn over several territories to Germany: Finland, Russian Poland, Estonia, Livonia, Courland (now part of Latvia), Lithuania, Ukraine, and Bessarabia. In addition, the Bolsheviks had to give much of the southern part of Russia to what was still the Ottoman Empire, controlled by Turkey.
Concept note-4: -Russian Communists (Bolsheviks), supported primarily by low-income factory workers, gained popularity, arguing for immediate peace with Germany. In November 1917, Bolsheviks took power in a military coup and, in March 1918, signed the Treaty of Brest-Litovsk, officially ending Russian participation in WWI.
Concept note-5: -The Treaty of Brest-Litovsk (also known as the Treaty of Brest in Russia) was a separate peace treaty signed on 3 March 1918 between Russia and the Central Powers (Germany, Austria-Hungary, Bulgaria, and the Ottoman Empire), that ended Russia’s participation in World War I.