There is a growing dependence on increasingly scarce Middle Eastern oil as countries industrialized and urbanized. Essentials like oil, coal and natural gas becomes imperative to a nation’s development.

References:

1. Energy industry. (n.d.). Retrieved March 18, 2015, from http://en.wikipedia.org/wiki/Energy_industry
2. Try Your hand at Futures. (n.d.). Retrieved March 18, 2015, from http://www.risksandrewards.org.uk/background_city_156.html