Final answer:
The United Nations consists of 193 members today and was established after World War II with 51 member countries. The UN aims to maintain peace, protect human rights, and promote social progress among nations.
Step-by-step explanation:
The United Nations consists of 193 members today.
The UN was established after World War II in 1945 with 51 member countries. Over the years, the organization has grown and currently includes almost all nations around the world, with only two countries not being members.
The UN seeks to maintain peace and security, protect human rights, and promote social progress among nations.