How did the constitution divide the North and South? How were they different?

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

What was the “u-2 incident” and how did it affect u.s./soviet relations in 1960?

Other in the u.s. supreme court, all federal courts were established bya. the constitutionb. congressc. presidential executive orderd. the states