The Oil Tree & the Old World Learning about the Olive tree in the past and present and how the western civilization made use of many things to make their economy strong is one of my passions. One of the things that interest me about the Olive tree is how it was revered in the Old Mediterranean world and also the Biblical world. It absolutely amazes me too, how extensive the olive is used in so many products. Another tree that has also interested me is the Shea tree. For this reason and more, I will share my findings about this tree but also many other fascinating things in regards to other trees and ‘things’ taken out of the Old World to the New World.