Explain briefly how the holocost Germans tried to hide this horrific crime against so many people

The Germans attempted to hide the Holocaust by initially carrying out the mass killings in secret extermination camps located in isolated areas, such as Auschwitz and Treblinka. They also used euphemistic language to describe the killings, referring to them as "resettlement" or "special actions." Additionally, they destroyed evidence of the mass murders, such as cremating the bodies or burying them in mass graves. They also orchestrated a propaganda campaign to portray the Jewish population as a threat to society, further justifying their actions to the public. Despite these efforts, the truth eventually came to light as the Allied forces liberated the concentration camps and survivors' testimonies were heard around the world.