They found out by experimenting :P sorry not much but yeah
Answer:
Columbus was the first explorer
The correct answers are d and e.
Northern Africa is mostly desert, and it is extreamly hard to trade w/ the rest of Africa
Answer:
The courts decision was that he would be the acting governor until a special election could be held to decide the remainder of the original term, which would have run from 1947-1951.
Explanation: