What caused oil prices to drop in 2014?

Related questions

1. Who controls the oil in the world?
2. What is WTI oil?
3. Will the price of heating oil go down?
4. Why does price increase when supply increases?
5. Why is oil so costly?
6. How does OPEC control the price of oil?
7. How many years of oil are left?
8. What was the price of oil in 2012?
9. Are Heating oil prices going up or down?
10. What happens when prices high?

Tags

1. #economies
2. #prices
3. #exporting
4. #organization
5. #numerous
6. #petroleum
7. #rapidly
8. #demand
9. #production
10. #heights
11. #drove
12. #contributed
13. #record
14. #factors
15. #increasing
16. #middle
17. #china
18. #price
19. #india
20. #countries
21. #emerging