the math is pretty simple, population of of Saudi arabia is 28 million, population of nigeria is 300 million
U.S. Energy Information Administration (EIA)
revenue from oil from saudi arabia 300 billion, divide that by 28 million
revenue from oil in nigeria 90 billion, divided by by 300 million and subtract corruption
in other words there is no way africa will get as rich as desert countries with tiny populations using oil
amount of tantulum in a 100 phone? a few pennies worth, so you can buy 1 kg of for $250 and make 10,000 phones and sell them for $250 each, and you got $2,500,000
who has more money? the person that sold a kg of tantulum for $250, or the person that used that kg of tantulum to make 10,000 phones at $250 a pop
lets look at japan, amount of natural resources = ZERO, economy is second or third largest
the math is crystal clear, resources are not the key to wealth, the key is manufacturing and education of the population, you can make some change from natural resources but that is about it