Japanese automobile producers sold more of their japanese production overseas than they sold in japan. their business strategy emphasizes:

The answer is: Exporting

Business strategy that emphasizes exporting would focus on obtaining larger portion of the profit from consumers in foreign market.

This type of strategy could only be achieved if the a certain country has an overwhelming competitive advantage over another country. In this particular case, Japanese overseas consumers would most likely come from nations that could not produce cars by their own.