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Pearl Harbor
Pearl Harbor was the site of the unprovoked aerial attack on the United States by Japan on December 7, 1941. Before the attack, many Americans were reluctant to become involved in the war in Europe. This all changed when the United States declared war on Japan, bringing the country into World War II.
![Page from the antisemitic German children's book, "Trau Keinem Fuchs..." [LCID: 10640e]](https://encyclopedia.ushmm.org/images/thumb/000d88fa-0d84-4a28-96df-9f6e6bd26113.jpg.pagespeed.ce.XbYc9ZhwTz.jpg)
![Family members say goodbye to a child through a fence at the ghetto's central prison where children, the sick, and the elderly were ... [LCID: 89772]](https://encyclopedia.ushmm.org/images/thumb/272dbc14-8a78-4af5-b2c7-84e1479e6e15.jpg.pagespeed.ce.P-96oRXdtq.jpg)
![Entrance gate to the Riga ghetto. This photograph was taken from outside the ghetto fence. [LCID: 25137]](https://encyclopedia.ushmm.org/images/thumb/59adc0f1-6c00-4915-8069-e3862f9be765.jpg.pagespeed.ce.R9ncBtIEJh.jpg)
![Deportation of Romani (Gypsy) families from Vienna to Poland. [LCID: 22005]](https://encyclopedia.ushmm.org/images/thumb/bd14360a-6cc2-4b64-8c68-32430f2350ee.jpg.pagespeed.ce.8cLU0l8qWq.jpg)
![John Perry, a movie photographer with Unit 129, films GIs of the 290th Infantry Regiment, 75th Infantry Division, and 4th Cavalry ... [LCID: sc116]](https://encyclopedia.ushmm.org/images/thumb/074cf38a-6408-4da5-8177-c64eea275e3a.jpg.pagespeed.ce.2DmJR94nZe.jpg)
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How and why was the Holocaust possible?