FYI - I just finished a book titled "the Silk Roads" a new world history. It's focus is on trade & commerce thru out the ages. goes into great detail about the start of the oil industry in the 19th century by the Brits in Persia/Iran where they first struck big oil. It's an enlightening read sorting out all the deceptions & reasons we're in the state were in right now. It's a hard read and the second half is the best.