The 1918 treaty of brest-litovsk altered the course of world war i by -ensuring the allies’ victory over the central powers. -ending russia’s involvement in the conflict. -consolidating russia and german power in the region. -assuring the united states would join the conflict.

-ending Russia’s involvement in the conflict. 

This allowed the Central Power to concentrate all their troops and effort to the West. However, even with the improvement of the amount of troops and supplies in the area, it was too little, too late, as the US joined the war, and poured millions of fresh troops and supplies into the war, and turned the tide, routing the German troops, and ending the war with an Allied victory

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Contributing factors  leading  to the harlem renaissance were the great migration of african americans to northern cities, which concentratedambitious  people in places where they could encourage each  other, and the first world war, which had created new industrial work opportunities for tens of thousands of people.