Did the roman republic last longer than the roman empire? how long did they both last? quick i have 20 minutes!

True or false plebeians were the highest social class in ancient rome

In a word processing program, the ribbon or menus contain the name of the document commands total number of pages functions

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