Carnegie used his money to build libraries both in the U.S.
as well as other countries so that people would benefit from others in terms of
knowledge. He also helped establish
schools so that more people will have access to education.
It would be the last answer. Adopted white American culture as there own
Yes, lack of foreign conflict for close to 100 years until world war 1 which is a sign of its success.
Answer: Petroleum.
Reason: Petroleum could be turned into kerosene which was used in stoves and lamps.