Final answer:
Market expansion strategies for companies going abroad include mergers, multinational corporations, and geographic strategies, while import substitution is not generally considered a successful strategy.
Step-by-step explanation:
The question is seeking the identification of one strategy for market expansion abroad that was not provided in the list. Companies typically have multiple strategies at their disposal for expanding their operations internationally. These strategies can include mergers, where companies combine to create a larger corporation, possibly to become more efficient or to acquire new product lines. Other strategies focus on the formation of multinational corporations, which operate without regard to national borders and aim to concentrate wealth in the hands of their core nations. Additionally, companies can rely on geographic strategies to protect against costly mistakes in the expansion process. Import substitution, however, is generally not considered a successful strategy for development or market expansion.