Answer:
B. They forced Germany to fight along both the Eastern and Western fronts.
Explanation:
In World War One Russia's purpose was to protect Serbia. Another explanation entering the war was that, along with France and Britain, it was a part of the triple alliance and had to assist them in the war. And therefore the while France and Britain were fighting from the eastern front, Russia fought from the western front, forcing Germany to fight both along the Eastern and Western fronts.
Please give more detail as to what i should be doing with all of the context, when you do give more details, message me and i will do my best to solve it for you
I think it's A. I hope this helps
