In order to be considered a civilization, a society must:

What best describes the transportation within cities in the early 1800s

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 is one result of the supreme courts decision in the mccullough v maryland case