This presentation is made for " Introduction to business" course. It is about Types of competitions in sales market or Market Structure which has 4 types ; Perfect, Monopolistic, Oligopoly, and Monopoly. It includes case study of " Wal-Mart " as well. ( but i'm not sure if it's accurate ) File Format : PPTX Power Point 2007 or Higher. Miss Nannapat K. ( MUM ) Tim3flies