how was the united nations structure
STRUCTURE OF THE UNITED NATIONS SYSTEM. The UN system is often referred to as a family of organizations. The charter of the UN, signed in San Francisco on 26 June 1945, defined six main organs of the new world body, each with specific tasks and functions.
Member States. Each of the 193 Member States of the United Nations is a member of the General Assembly. States are admitted to membership in the UN by a decision of the General Assembly upon the recommendation of the Security Council.