How did the country change because of the Civil War and Reconstruction in the nineteenth century?

Which of the following was not an organization during the civil rights movement in the 1960s

Which is not an abundant natural resource found in africa?

Ascientist performs an experiment where she measures the mass of a piece of metal, pours acid onto the metal, washes the metal, and then re-measures the mass of the metal. the scientist repeats the experiment several times, each time increasing the amount of acid used. the dependent variable in the experiment is the: initial mass of the metal final mass of the metal amount of acid used washing the metal