This is a complicated issue, but in general the US government did not do much to intervene in the German treatment of Jews during this time, mostly because there was a great deal of both isolationist and anti-Semitic sentiment in the US during this time.
Answer:
Many historians believe the Indus civilisation collapsed because of changes to the geography and climate of the area. Movements in the Earth's crust (the outside layer) might have caused the Indus river to flood and change its direction.
True i believe. not for sure
