There were more goods than wants for them
Article 1, sec. 8, of the constitution which gives congress the power to make all laws that are necessary & proper for carrying out its duties
Ratification by China, France, theSoviet Union, the United Kingdom, the United States and by a majority of the other signatory states. The Charter of the United Nations (also known as the UN Charter) of 1945 is the foundational treaty of the United Nations, an intergovernmental organization.
hopefully this helps