The primary purpose of the United Nations, as established in 1945, was to promote international cooperation and maintain global peace and security in the aftermath of World War II. The UN was created to prevent future conflicts by fostering dialogue among nations, addressing humanitarian issues, and upholding human rights. It operates through various specialized agencies, including the World Health Organization (WHO), the United Nations Educational, Scientific and Cultural Organization (UNESCO), and others, working on issues ranging from health to education to socio-economic development. The UN also provides a platform for countries to discuss international laws and collaborate on global challenges.