Which of the following countries was not instrumental to the formation of the United Nations Organization (UNO)?

Germany was not instrumental to the formation of the United Nations Organization (UNO). The UNO was formed after World War II to promote international cooperation and prevent future wars. The main countries that were instrumental to its formation were the United States of America, Britain, and the USSR. They were the three major Allied powers during the war and played a significant role in negotiating and drafting the UN Charter. Germany, on the other hand, was a defeated power and did not participate in the formation of the UNO.