This article talks about how researchers began to document about all the ghettos, slave labor sites, concentration camps and the killing factories of the Nazis throughout Europe that has shocked scholars about the history of the Holocaust. During the reign of Hitler’s brutality from 1933 to 1945 researchers have cataloged 42,500 Nazi ghettos and camps throughout Europe, spanning German-controlled areas from France to Russia and Germany. The documented camps included “killing centers” and thousands of forced labor camps. In the forced labored camps, prisoners manufactured war supplies, prisoner-of-war camps, and sites named “care” centers, where pregnant woman were forced to have abortions or their babies were killed after birth. Women were