Answer:
Atlantic Charter
After World War I, an international group developed the League of Nations to solve disputes between countries. When World War II started, the initiative failed but highlighted the need for a new, reformed organization that could promote global peace.
In August 1941, Franklin D. Roosevelt and Winston Churchill held a secret meeting where they discussed the possibility of starting an international peace effort. They came up with a declaration called the Atlantic Charter, which outlined ideal goals of war and paved the way for the development of the U.N.
Step-by-step explanation:
U.N. Charter
Over the next few years, several meetings took place to draft a post-war charter that would decisively describe the roles of the U.N.
The main principles and structure of the United Nations Charter were determined by leaders at the United Nations Conference on International Organization (UNCIO) in San Francisco on April 25, 1945.
After the war ended, the official United Nations Charter was ratified by 51 members on October 24, 1945