We would need to know the types you have first?
Answer:
I'm thinking the last answer, but it could be the first answer.
Explanation:
Answer: Vasco de Gama
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De Gama was the first to reach India by sea, and accomplished this in the late 15th century. He did this by sailing around the south coast of Africa.
Answer:
a.
Explanation:
The first drawback is basically money. It takes loads of money to lead researches, because you either have to pay a lot of people to collect these data or do it yourself and take years to find a numerous group to provide a good amount for a trustworthy, important research.
