Lenin's agreement to end Russian participation in the First World War resulted in the --
A) occupation of German forces in western Russia
B) elimination of a threat on Germany's eastern front
C)isolation of Russia from further international affairs
D)annexation of Poland by Russia as a buffer zone
B: Elimination of a threat on Germany's eastern front
Explanation:After the Russians backed out of the war, it temporarily helped relief Germany and helped free up large number of Austrian and German troops to fight somewhere else.
