二战以后美国经济发展急剧膨胀,大公司实力不断扩大,全球性市场为跨国公司的扩张奠定了基础。1950年,混合兼并即跨行业兼并,使多元产业发展成为主流,企业呈现多样化发展的趋势。日本、韩国的大型企业在发展过程中,也大多采取了多样化经营的战略。由于日、韩经济的持续快速发 After World War II, the U.S. economy expanded rapidly and the strength of large companies was constantly expanding. The global market laid the foundation for the expansion of multinational corporations. In 1950, mergers and acquisitions were cross-sectoral mergers, so that the development of diversified industries became mainstream, and enterprises showed a trend of diversified development. Large-scale enterprises in Japan and South Korea have also adopted diversified strategies in their development. As Japan and South Korea sustained rapid economic development