The 1918 Treaty of Brest-Litovsk altered the course of World War I by ending Russia's involvement in the conflict.
<u>Explanation:</u>
On 3 March 1918 The Brest- Litovsk treaty was signed putting an end to Russia'sparticipation in the war which is a peace treaty . It was signed between Russia and the combined powers of Germany , ottoman empire, Bulgaria and Austria- Hungary.
The OctoberRevolution , Russia' s endless loss and the outbreak of civilwarcompelled Russia to withdraw from the FirstWorldWar.
