The correct statements are the following:
- to prevent wars.
- to promote human rights
- to increase the standard of living for all people.
- to provide international law
The United Nations is a supranational and intergovernmental organization that was created in 1945, in the aftermath of WWII, with the main purpouse of preventing future conflicts through international cooperation and by the creation of a global community feeling. Some its goals are also the following: protecting universal human rights, promoting sustainable development and providing humanitarian aid when living standards are extremely low and, finally, upholding international law.