We would like to thank Crown Family Philanthropies and the Abe and Ida Cooper Foundation for supporting the ongoing work to create content and resources for the Holocaust Encyclopedia. View the list of all donors.
Featured Article
Warsaw
In the fall of 1940, German authorities established a ghetto in Warsaw, Poland’s largest city with the largest Jewish population. Almost 30 percent of Warsaw’s population was packed into 2.4 percent of the city's area.
Must Reads
-
![Jews from Subcarpathian Rus get off the deportation train and assemble on the ramp at Auschwitz-Birkenau. May 1944.]()
Article
Introduction to the Holocaust -
![Jews from Subcarpathian Rus get off the deportation train and assemble on the ramp at Auschwitz-Birkenau. May 1944.]()
Discussion Question
What conditions, ideologies, and ideas made the Holocaust possible? -
![Illustration from an antisemitic children's primer. [LCID: 10640c]]()
Article
Antisemitism -
![Adolf Hitler stands with an SA unit during a Nazi parade in Weimar [LCID: 02286]]()
Article
The Nazi Party -
![Nazi "Euthanasia" Program]()
Article
Euthanasia Program and Aktion T4 -
![The International Military Tribunal was a court convened jointly by the victorious Allied governments. [LCID: 61332]]()
Article
International Military Tribunal at Nuremberg -
![A group portrait of some of the participants in the uprising at the Sobibor killing center. [LCID: 10625]]()
Article
Sobibor -
![Clandestine photograph of the destroyed Warsaw ghetto.]()
Article
Warsaw -
![Danish rescue boat [LCID: 19986oym]]()
Article
Denmark
![Illustration from an antisemitic children's primer. [LCID: 10640c]](https://encyclopedia.ushmm.org/images/thumb/4c6348d1-d3e6-4be3-aae5-b12761f4f20a.jpg.pagespeed.ce.ZYVA_641w6.jpg)
![Adolf Hitler stands with an SA unit during a Nazi parade in Weimar [LCID: 02286]](https://encyclopedia.ushmm.org/images/thumb/1e5a14c5-9521-4637-845a-55f423097328.jpg.pagespeed.ce.nXwncuV_1R.jpg)
![The International Military Tribunal was a court convened jointly by the victorious Allied governments. [LCID: 61332]](https://encyclopedia.ushmm.org/images/thumb/6e42d8fc-22a4-4841-966c-aef2e9fbddbb.jpg.pagespeed.ce.LPy0CV3IbU.jpg)
![A group portrait of some of the participants in the uprising at the Sobibor killing center. [LCID: 10625]](https://encyclopedia.ushmm.org/images/thumb/aa0189cc-81e0-45c3-a1a1-eb70ad9f1bee.jpg.pagespeed.ce.ySEtbwOU7a.jpg)
![Danish rescue boat [LCID: 19986oym]](https://encyclopedia.ushmm.org/images/thumb/3848178b-959a-4e35-88cb-571502c98d09.jpg.pagespeed.ce.KDY9ZvBT-Z.jpg)
Explore the Encyclopedia
ID Cards
Explore the ID Cards to learn more about personal experiences during the Holocaust
Browse A-Z
Find articles, photos, maps, films, and more listed alphabetically
Discussion Questions
How and why was the Holocaust possible?