Question

Russia’s withdrawal from the war allowed Germany to focus

on building an empire to the south.
on building an empire to the east.
its resources on a one-front war in the east.
its resources on a one-front war in the west.

Answer 1

resources on a one-front war in the west.

Step-by-step explanation:

Answer 2

Russia's withdrawal from the war allowed Germany to focus on its resources on a one-front war in the west.
Russia was not powerful than Germany it was only that Russia had a large population of soldiers. Some of the new military weapons which founded in world war 1 are poison gas tanks, submarines and machine gas.
Soldiers used dug trenches to protect themselves from enemy fire. Germany was among the countries which were the central powers of world war 1 while Russia was among the Allied powers of world war 1.