Final answer:
During the Holocaust, the 3 million Jews in Poland, which was 10% of the country's population, faced severe persecution, including forced ghettos, labor, and extermination in Nazi camps with 6 million Jews killed overall.
Step-by-step explanation:
The Jewish population of Poland faced unprecedented persecution and genocide during the Holocaust. At the time, Poland had an estimated 3,000,000 Jewish residents, which accounted for about 10% of the nation's total population. With the German invasion of Poland in 1939, the entire Jewish community was subjected to ghettos, forced labor, and mass extermination. The Warsaw Ghetto housed over 400,000 Jews, with conditions so severe that starvation and disease claimed the lives of about 500,000 Jews in ghettos alone. Additionally, the existence of Nazi extermination camps throughout occupied Poland, such as Auschwitz, facilitated the systematic murder of around 6 million Jews in the Holocaust.