Answer: 1.) On November 7, 1917, a coup d'état went down in history as the October Revolution. 2.) The Mongol Empire was the largest contiguous empire in history.
Explanation: 1.) Because, Russia later terminated the Triple Entente military alliance with France and Britain. For Russia, it was effectively the end of the war. 2.) Also, because The Mongol Empire existed during the 13th and 14th centuries.