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The Unit 731 experiments involved infecting prisoners, primarily Chinese prisoners of war and civilians, deliberately with infectious agents, and exposing prisoners to bombs designed to penetrate the skin with infectious particles.
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The gulf of tonkin gave the President of the United States (Lyndon B. Johnson) the right to use any military force that was deemed conventional without the declaration of war by Congress in Southeast Asia and to assist any army, whether legitimate or not. This started the rapid escalation from the Americans in the Vietnam War and their rapid warfare against North Vietnam.
The war lasted from 1775 to 1783, so 8 years
1st because the freedom of speech ,religion ,press