Answer:
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.
