What event spurred world leaders to begin the United Nations?

The Great Depression

World War II

World War I

The dropping of atomic bombs on Japan

It was established after world war ll in order to make sure something like it would no happen again.

The event that spurred world leaders to begin the United Nations was World War II. The correct option among all the options given in the question is the second option. The United Nations is actually an intergovernmental organization with the sole purpose of promoting international peace and co-operation. The United nation was established on 24th of October in the year 1945. The head quarter of United Nations is located in Manhattan of United States of America. During the time of its founding, UN had 51 members.