I’m pretty sure it’s systematic agriculture
Answer: The world war 2 severely disrupted Europe's economies and helped set the stage for the Great Depression of the 1930s. , The Times Atlas to the Second World War . involvement in the conflict, wartime diplomacy, military strategy, and the war's economic and social implications. The question of how Japan was able to carry out its successful surprise attack on Pearl Harbor is thoroughly examined in Gordon W. The war's impact on the homefront is analyzed in William L. The most visible change involved the appearance of large numbers of women in uniform, as more than 250,000 women joined the WACs, the Army Nurses Corps, the WAVES, and the Navy Nurses Corps.
The war also challenged the conventional image of female behavior, as «Rosie the Riveter» became the popular symbol of women who worked in defense industries. Wartime transformations in women's lives are examined in Susan M. Roberts, which claimed without supporting evidence that the Japanese had received support from some Japanese Americans, helped to create a climate of opinion that led to internment. World War II marked the dawn of the atomic age. The development of nuclear weapons is thoroughly examined in Richard Rhodes, The Making of the Atomic Bomb .
The decision to drop two atomic bombs on Japan remains one of the most controversial decisions in military history.
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