The answer is: D.The Bolsheviks ended Russia’s involvement in World War I.
In the october revolution, Bolshevik Party that led by Vladimir Lenin led a coup d'etat against the current Russian Government.
The party later on convince a lot of people to ended the Russian involvement in world war I due to the economic depression that it caused for Russian people, and eventually the Russian government fall to the pressure and retract itself from world war I.
The Declaration of Independence
Rome, Milan, Naples, Turin, Bari etc
In the 1940s and 1950s, pan-arabism grew in the middle east in response to the growing influence from Wetern nations. Pan-Arabism or Arabism is an ideology espousing the unification of the countries of North Africa and West Asia. Hope this answers the question.