Basalt, Granite, Pegmatite, Limestone, sandstone, Shale and Sandstone, Slate
Like i said before this question don't sound complete
The Nazis established killing centers for efficient mass murder. Killing centers were almost exclusively “death factories.” They are also referred to as “extermination camps” or “death camps.” Nazi concentration camps, by contrast, served primarily as detention and labor centers. At the killing centers, Nazi officials employed assembly-line methods to murder Jews and other victims. German SS (Schutzstaffel; Protection Squadrons) and police murdered nearly 2,700,000 Jews in the killing centers by asphyxiation with poisonous gas or by shooting.
Answer:
people standard of liveing was amazing during the roaring 20's and the economy was great homlessness was so low but after the stock market crash in 1929 everyone was destroyed by it homelessness and unemployment skyrocketed