Answer:The League of Nations came into being after the end of World War One.
Explanation:The League of Nation's task was simple – to ensure that war never broke out again. After the turmoil caused by the Versailles Treaty, many looked to the League to bring stability to the world.
Explanation: It is because he didn't want people to over use, abuse the atomic bomb. Because it is a heavy explosion that may kill hundreds of thousands of people.