Which type of element is found to be brittle and does not react with acid

What caused the settlement of more african americans in the mississippi alluvial plain region then in the ozark mountains region?

Which supreme court dressed the second a. presser v. illinois b. quilici v. the village of morton grove c. united states v. cruikshank d. united states v. miller

Advances in technology generally result a.) a higher standard of living for everyone b.) greater productivity c.) more jobs for everyone d.) more government regulation