A multinational corporation (MNC) operates in more than one country. International marketing differs from domestic marketing in several key ways, including dealing with different political entities, legal systems, monetary systems, and trade restrictions between countries. Culture and society greatly influence business activities and decisions through changing consumer preferences, demographics, advertising techniques, and internal company policies. McDonald's primarily uses franchising as its entry model in foreign markets, which allows for rapid global expansion at relatively low cost and risk by transferring responsibilities to local franchisees. Market segmentation divides markets into distinct subsets to better target customer groups. The purpose of international market segmentation is to target segments across national borders in a standardized way to gain economies of scale while still adapting to local customer