This document discusses various theories and concepts related to internationalization and modes of entry into foreign markets. It begins by defining key terms like globalization and internationalization. It then examines different modes of entry such as exporting, licensing, joint ventures, strategic alliances, franchising, and wholly owned subsidiaries. Several theories that analyze why companies internationalize are also summarized, including Hymer's theory, Vernon's product life cycle theory, Buckley and Casson's internalization theory, and Dunning's eclectic paradigm.