Why is politics useful to the citizens of a country

In order to maintain national security within its colonies in america, england constructed a series of forts along colonial boundaries for protection. true false

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

Which of these works from the italian renaissance exhibits contrapposto?