Rom Economics point of view: Why Oil & Gas Industry is vertically integrated?

Via using the attached article and power-point presentation, write 4 pages analysis about how Oil & Gas industry is vertically integrated and provide evidence a?dataa? on why vertical integration might occur in (GCC) countries a?gulf countriesa?. What are the advantages of the vertical integration for this industry and what are the disadvantages.

I need a writer who is specialized in Economics in master level because this is an paper for an MBA class a?Managerial Economicsa?