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.
The United Nations: The United Nations was created on January 1st, 1942, by the U.S. President Franklin D. Roosevelt after World War II. The organization was originally created to prevent a third world war and to promote international cooperation. When the UN was created, it replaced the ineffective League of Nations.