I am certain the answer is a. It sounds the most correct to me.
1. Julius Caesar conquered Gaul
There were many of them. Spain was divided from the English colonies with the desert in the south west region. There were also mountains in the west as well as in the east and north. lakes and forests also separated northern colonies from others. The Caribbean separated the middle part in case anyone wanted to go from one continent to the other by sea.
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At the end of the French and Indian War or the Seven Years War, the British lost most of their land west of the Appalachians and there was no place for new colonists to go.
Shortly before the Civil War, Rockefeller and a partner established a shipping company in Cleveland, Ohio. The company made so much money during the war. In 1863, he and his partner invested in another business that refined crude oil from Pennsylvania into kerosene for illuminating lamps.
