Of the natural resources produced in Africa, which one do you think was the most valuable in ancient times? Which natural resource do you think is the most valuable today? Explain your answer.

gold is valuable they did not even consider silver but I still think it's still gold or limestone maybe

answer; i thinking 4.5 million. in sydney australia;

b.

developed countries have tended to improve the environment, while developing countries have tended to damage it.