Increasing feelings of nationalism among many groups led to which consequences after world war 1?

Rise of the Nazi party in Germany and Adolf Hitler became Fuhrer of Germany.

Explanation:

Nationalism negatively affected Germany because Adolf Hitler uses nationalism as a tool to blind the people of Germany to the atrocities of his regime.

Germany lost in First World War and the treaty Versailles which devastated Germany politically, militarily and socially and also accused Germany of the started first world war.

Hitler seized this opportunity of the downtrodden German people who are searching for the nationalist identity.

the answer would be:

b. race

the treaty of brest-litovsk was a peace treaty signed on 3 march 1918 between the new bolshevik government of russia and the central powers (german empire, austria-hungary, bulgaria, and the ottoman empire), that ended russia's participation in world war i.