How do density and distribution affect the quality of life? Give a specific example. (this is for human geography)

Which of the following statements about the migration of workers to other countries is false?

What did the pattern of earthquakes in the wadati-benioff seafloor zones show scientists? a.) earthquakes occur where the ocean floor reaches its highest temperatures. b.) many earthquakes take place 700 kilometers below the seafloor. c.) slabs of ocean floor return to the mantle in subduction zones. d.) ocean - trenches cause earthquakes.

After world war i, how did the us economy compare to that of germany?