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the most common measures of market concentration? Describe how these measures ed to identify the extent to which sales in a market are dominated by one or more Highlight the major problems associated with market concentration measures. Apply sures to the following industries in Egypt: steel, cement and ceramics. 1970s, Prof. Michael Porter began publishing articles on strategy that would have a mpact on the study of this subject. In his famous "Five Forces Model", Porter introduced c strategy options for competition: namely the "differentiation" approach and the "cost- approach. Explain the rationale for Porter's generic strategy options in the light of the s of different competitive conditions or assumption to the organization's ability to set ce price. Support your answer with relevant real-life examples