5) What happened in November 1917 when the government of the Russian Empire under Czar Nicholas was taken over by the Bolsheviks? The Soviet Union signed a treaty with Germany to support the Central Powers and fight against the Allies for the remainder of the war.

The Soviet Union signed an armistice with Germany and withdrew Russian forces from the war.

The Soviet Union attacked the Ottoman Empire and annexed much of its territory.

The Soviet Union joined the Allies and fought against the Central Powers for the remainder of the war.