A result of the Nuremberg trials was that the United Nations

Option D

Explanation:

This question is the complete question:

A result of the Nuremberg trials was that the United Nations

A - Moved to protect war criminals more carefully.

B - Left prosecution of war criminals up to each country.

C - Prevented anyone from using Nazi symbols in the future.

D - Established that genocide was an international crime

The Nuremberg trials were series of trials (13 trials to be specific) conducted in Nuremberg in Germany with the sole aim of prosecuting German military leaders, political officials, and financiers for the crimes they committed during the Second World War, held from 1945 to 1949.

The judges who preside over these trials were from the United Kingdom, France, the Soviet Union, and the United States (countries of the Allies). Nuremberg trials were a milestone for the establishment of permanent international laws, in order to prevent subsequently, any possible genocides and other war crimes and showed that head of state of any nation could be held responsible for any Crimes Against Humanity. At the end of the trials, all except three of the defendants were found guilty; twelve of the accused were sentenced to death and long sentences for other Third Reich leaders.