What was not a new technology used in world war i that contributed to the massive casualty rates? a) u-boats b) poison gas c) machine guns d) jet fighters

Brainliesttt !me : ) describe the conflict and changes in israel:

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

To what extent do you think the roman republic was democratic?