United Nations was established in:

Correct option is A

• The United Nations (UN) was established on 24th October 1945 after the end of World War II.
• The creation of the UN aimed to prevent future global conflicts and promote peace, security, and cooperation among nations.
• The UN Charter was signed by 51 founding member countries in San Francisco on 26th June 1945, and the organization officially came into existence when the necessary number of countries ratified the charter.

• ​The UN's headquarters is located in New York City, USA.
• The UN currently has 193 member states, including nearly every recognized sovereign state in the world.
• United Nations Day is celebrated on 24th October.​