How would you describe frank crowe. what were some of the innovations that made construction of the hoover dam possible

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 the main problem with the commission form of government? a commissioners often focus on one area. b. each commissioner has too much administrative power. c. the commissioners have trouble working together. d. commissioners are often very corrupt.

Over time, who did the nature of slavery change in america