The Nazi's used dehumanization on the Jews to rid them of HOPE. The lack of basic needs, like food and water, was the solution to make them think about work, food, and death. The Nazi's used dehumanization by starving the Jews so they were willing to fight or be killed for an extra portion of bread. When they were on the march, the Jews only had a few rations of bread and drank snow off the back of others. Hitler's Nazi's basically made them think this was there life, now and forever, until they died a sad and terrible death.
Lack of necessities and abuse in any way imaginable enabled the Nazi's to maintain control over the camps.