Michael Porter (Strategic Management).

Michael Porter gave the diamond theory of national advantage, which states that the features of home country are crucial for the success of an organisation in the international markets- Porter's Diamond helps to explain why some nations tend to produce flrms with sustained competitive advantages in some industries more than others- Originally Porter was concerned with the question of why some nations succeed and others fail in international competition- Drawing on research, evaluate the framework and its 'relevance' for understanding how industries and organisations in your country (Nigeria) can achieve competitive advantages.  

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