The Porter Diamond theory of national advantage is based on the assumption that the level at which a business is competitive is interlinked with how other businesses perform. Hence, this model is relevant to understanding how industries and organizations in the country can achieve a competitive advantage. It analyzes industries within identical product groups which have competitive pressure. The Porter Diamond model states that the home country of a firm has a huge impact on their creation of advantages on an international level. The country, or the home base, provides various factors that support industry, but may also hinder it from acquiring advantages in international competition.