Answer:
Earlier? This is just a hypothetical question that can be properly answered only by historians. But let´s try.
If the war on the German-Russian front had continued in 1917, at least it can be said that the German army could not have sent many divisions to the Western Front after the signature of the peace of Brest-Litovsk that got Russia out of the war. Those armies would have to continue to be tied in the Eastern Front. Even after the Russian withdrawal from the conflict, the Allies won the war thanks to the United States´ joining the Allied camp in 1917. The American involvement tipped the balance in favor of the Allies and in the end, the evaporation of the Eastern Front didn´t have a decisive impact on the final outcome of WWI.
Explanation:
