We would like to thank Crown Family Philanthropies, Abe and Ida Cooper Foundation, the Claims Conference, EVZ, and BMF for supporting the ongoing work to create content and resources for the Holocaust Encyclopedia. View the list of donor acknowledgement.
German troops invaded Poland on September 1, 1939, triggering World War II. In response to German aggression, Great Britain and France declared war on Nazi Germany.
Learn more about personal experiences during the Holocaust
Explore a timeline of events that occurred before, during, and after the Holocaust.
How and why was the Holocaust possible?