Who was the enslaved African American whose suit for freedom reached the U. S. Supreme Court?

The persian empire finally fell to the armies of

In relation to the september 11th attacks, the term ground zero refers to new york city. the pentagon. the shanksville, pennsylvania, memorial. the site of the world trade center.r

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