A government regulation is that the answer!!
Answer:
Abraham Gesner, geologist, author, chemist, inventor .
Explanation:
Gesner invented kerosene oil and, because of his patents for distilling bituminous material, was a founder of the modern Petroleum Industry.
Answer:
Most likely because of potato famine. A lot of starvation happened and there were diseases.
To protect the Spanish territory from the French :)