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1,151 events. 680 mapped connections. One growing investigation.

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Results for “atomic”

3 events · 10 research items · December 31, 1913 to January 29, 2016
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Atomic Bomb Dropped on Hiroshima
Published Research World Wars: Power, Conflict & Consequence

Atomic Bomb Dropped on Hiroshima

6 August 1945 — An American B-29 drops the uranium bomb Little Boy on Hiroshima. The explosion and fire destroy much of the city and kill tens of thousands of people i...

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Atomic Bomb Dropped on Nagasaki
Published Research World Wars: Power, Conflict & Consequence

Atomic Bomb Dropped on Nagasaki

9 August 1945 — The United States drops the plutonium bomb Fat Man on Nagasaki. Tens of thousands are killed immediately or in the following months. The attack occurs ...

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Franklin D. Roosevelt
Published Research World Wars: Power, Conflict & Consequence

Franklin D. Roosevelt

U.S. president whose administration responded to warnings about atomic weapons and eventually authorized the massive wartime development program.

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Harry S. Truman
Published Research World Wars: Power, Conflict & Consequence

Harry S. Truman

U.S. president after Roosevelt's death. Truman inherited the Manhattan Project and authorized the wartime use of atomic bombs against Japan.

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Henry L. Stimson
Published Research World Wars: Power, Conflict & Consequence

Henry L. Stimson

31 May 1945 — Secretary of War Henry Stimson chairs the first major meeting of the Interim Committee considering policy surrounding the atomic bomb. Stimson becomes on...

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Hirohito Announces Japan's Surrender
Published Research World Wars: Power, Conflict & Consequence

Hirohito Announces Japan's Surrender

15 August 1945 — Emperor Hirohito's recorded voice is broadcast to the Japanese population announcing acceptance of Allied surrender terms. The decision follows intens...

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J. Robert Oppenheimer
Published Research World Wars: Power, Conflict & Consequence

J. Robert Oppenheimer

Physicist selected by Groves to direct the Los Alamos laboratory, where scientists designed and assembled the atomic weapons.

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Lavrentiy Beria
Published Research World Wars: Power, Conflict & Consequence

Lavrentiy Beria

22 June 1941 — Beria heads major Soviet security institutions during the war. His apparatus oversees internal repression, intelligence, population transfers and elemen...

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Trinity Nuclear Test
Published Research World Wars: Power, Conflict & Consequence

Trinity Nuclear Test

16 July 1945 — The United States detonates the world's first nuclear device at the Trinity test site in New Mexico. The successful plutonium implosion test proves that...

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