What is competition like in the North American wholesale club industry? Which of the five competitive forces is strongest and why? NOTE: Use the information in Figures 3.4, 3.5, 3.6, 3.7, and 3.8 (and related discussion in Chapter 3 and the related Instructor's Note to analyze competition in the industry.

Here by figure 3.4, 3.5, 3.6, 3.7 and 3.8 I mean the explanation through the Rivalry, supplier forces, power of buyers, the threat to substitutes, the threat of new entrants. These are the concept from the book crafting and executing strategy by Thompson.