Why was the city of constantinople rich and what is it called now

Brainliesttt !me : ) what brought about the end of the soviet union?

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 the best following describes william jennings bryan’s learning experience