Oil

Like many others have observed, location plays a huge role in the amount of oil produced in a country. However, to question Caitlin's point (which seems to be a common theme in my blog posts for some reason), does land fertility really imply more oil? I did some basic research on oil production, and I believe that oil exported from the Middle East is derived from rocks. I'm not entirely sure what this means in terms of having the major oil-producing areas be in forested areas, but the fertility of land is not necessarily the cause of prosperous oil.