Yahoo Search Búsqueda en la Web

Resultado de búsqueda

  1. en.wikipedia.org › wiki › Unit_731Unit 731 - Wikipedia

    Hace 12 horas · Formations Building of the Unit 731 bioweapon facility in Harbin. Japan initiated its biological weapons program during the 1930s due to the prohibition of biological weapons in interstate conflicts by the Geneva Protocol of 1925. They reasoned that the ban verified its effectiveness as a weapon. Japan's occupation of Manchuria began in 1931 after the Japanese invasion of Manchuria.