There is no single factor that can be considered as prime factor to determine the success or failure of economy in fact there are various factors that plays their part in economy.All people of America or any other country would love to see low unemployment rate.Crude Oil is currently trading 98.56 a barrel down 1.29. Today the International Energy Agency cut its outlook for global demand. With Europe falling into a recession and dragging its neighbors with it, use of crude will drop in the EU but also for exports and manufacturers around the globe.You can download International Energy Agency’s latest annual publication of energy data free of charge for your ipad or iphone devices.
http://www.iea.org/publications/free_new_Desc.asp?PUBS_ID=1199