Thatâs capital delta (lower case is Î´), a letter of the Greek alphabet. It can be used in equations just like normal letters in a similar manner to x. It is usually used to represent: a difference. an angle.
Roosevelt also sought to convince the public that an international organization was the best means to prevent future wars. The Senate approved the UN Charter on July 28, 1945, by a vote of 89 to 2. The United Nations came into existence on October 24, 1945, after 29 nations had ratified the Charter.
Definition: The United Nations, or UN, is an international organization of 193 member-states. It was founded in 1945 to prevent another world war.Its headquarter is in New York.he UN Security Council is the most powerful UN unit. Its mandate is to keep the peace. The five permanent members are China, France, Russia, the United Kingdom, and the United States. The General Assembly elects ten non-permanent members that hold two-year terms.