To protect its frontiers, the roman empire depends on mercenaries. what is a mercenary

Which caused demand for farm products to decline after world war i

What strategy is this ad using to get people to support its product? o o lt claims that everyone agrees that these basketballs are the best it details how these basketballs will improve performance. it provides stats about players who use these basketballs. it uses a celebrity to endorse these basketballs.

Dalton developed the first model of the atom that showed the structure of the inside of an atom