Well that's easy. Auschwitz was a death camp, and Manzanar was an internment camp. The difference is that Auschwitz was used by the National Socialist German Workers Party (Nazis) as a eugenics machine. Eugenics is the practice of removing certain genes from the gene pool, through sterilization, or murder to create a perfect human race (Aryan). While Manzanar was used to hold 11,000 Japanese Americans during world war two who were seen as public enemies. Both Concentration camps and Internment camps were racially motivated, and both were used for public enemies. Concentration camps were far more violent, and were also politically motivated, used to remove party enemies.
The 1920s were an age of dramatic social and political change. For the first time, more Americans lived in cities than on farms. The nation's total wealth more than doubled between 1920 and 1929, and this economic growth swept many Americans into an affluent but unfamiliar “consumer society.”
There are actually 45 presidents in the U.S.A