United Nations Timeline of Events

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The United Nations is an international organization whose stated aims are facilitating cooperation in international law, international security, economic development, social progress, human rights, and achievement of world peace...

Timeline of Events

1944

8.21.1944

Dumbarton Oaks Conference, prelude to the United Nations, begins.

1945

4.25.1945

Fifty nations gather in San Francisco, California to begin the United Nations Conference on International Organizations.

10.24.1945

Founding of the United Nations

11.1.1945

The official North Korean newspaper, Rodong Sinmun, is first published under the name ''Chongro''. Australia joins the United Nations.

11.5.1945

Colombia joins the United Nations.

11.15.1945

Venezuela joins the United Nations.

12.4.1945

By a vote of 65 to 7, the United States Senate approves United States participation in the United Nations (the UN was established on October 24, 1945).

1946

1.10.1946

The first General Assembly of the United Nations opens in London. Fifty-one nations are represented.

4.8.1946

The last meeting of the League of Nations, the precursor of the United Nations, is held.

11.19.1946

Afghanistan, Iceland and Sweden join the United Nations.

12.16.1946

Thailand joins the United Nations.

1947

9.30.1947

The Islamic Republic of Pakistan and Yemen join the United Nations.

1948

4.7.1948

The World Health Organization is established by the United Nations.

4.19.1948

Burma (now Myanmar) joins the United Nations.

5.29.1948

Creation of the United Nations Peacekeeping Force the United Nations Truce Supervision Organisation

9.14.1948

Groundbreaking for the United Nations headquarters in New York City.

1949

1.1.1949

United Nations cease-fire takes effect in Kashmir from one minute before midnight. War between India and Pakistan stops accordingly.

5.11.1949

Israel joins the United Nations.

1950

8.24.1950

Edith Sampson becomes the first black U.S. delegate to the United Nations.

9.26.1950

United Nations troops recapture Seoul from the North Koreans.

9.26.1950

Indonesia is admitted to the United Nations.

9.28.1950

Indonesia joins the United Nations.

10.19.1950

Korean War: After the Chinese leadership finally settled the issue of armed intervention on October 18, the People's Republic of China joins the Korean War by sending thousands of troops across the Yalu river to fight United Nations forces.

11.26.1950

Korean War: Troops from the People's Republic of China launch a massive counterattack in North Korea against South Korean and United Nations forces (the Battle of the Ch'ongch'on River and the Battle of Chosin Reservoir), ending any hopes of a quick end to the conflict.

11.29.1950

Korean War: North Korean and Chinese troops force United Nations forces to retreat from North Korea.

1951

3.14.1951

Korean War: For the second time, United Nations troops recapture Seoul.

1952

9.15.1952

United Nations gives Eritrea to Ethiopia.

10.14.1952

Korean War: United Nations and South Korean forces launched Operation Showdown against Chinese strongholds at the Iron Triangle. The resulting Battle of Triangle Hill was the biggest and bloodiest battle of 1952.

1955

12.14.1955

Albania, Austria, Bulgaria, Cambodia, Finland, Hungary, Ireland, Italy, Jordan, Laos, Libya, Nepal, Portugal, Romania, Spain and Sri Lanka join the United Nations.

1956

11.12.1956

Morocco, Sudan and Tunisia join the United Nations.

12.18.1956

Japan joins the United Nations.

1957

3.8.1957

Ghana joins the United Nations.

9.17.1957

Malaysia joins the United Nations.

1958

12.12.1958

Guinea joins the United Nations.

1960

9.28.1960

Mali and Senegal join the United Nations.

10.7.1960

Nigeria joins the United Nations.

10.12.1960

Cold War: Nikita Khrushchev pounds his shoe on a desk at United Nations General Assembly meeting to protest a Philippine assertion of Soviet Union colonial policy being conducted in Eastern Europe

1961

9.27.1961

Sierra Leone joins the United Nations.

12.14.1961

The United Republic of Tanzania joins the United Nations.

1962

10.8.1962

Algeria joins the United Nations.

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