Control of the Atlantic ocean was a gateway for easy trade between other countries suck as Mexico,Africa,and possibly America. it could have also served as war territory for ships.
It used oligarchy, rule by a few.
A is the answer i beleive<span />
Well, structurally it would be similar with the Pope being the head of the Church, like a King. Then respectively you have the archbishop who rules an ecclesiastical province. Then the bishops rule the diocese that make up the province. In that way, the line of power is similar with King, nobles and peasants.
The britons had already gone into the iron era which rome was just introduced to. a disadvantage was strategy. the romans were strategically gods.in other words the britons were not great strategists.