The countries that became divided into two political entities as a result of cultural or ideological conflict are the Korea, Vietnam, Germany, and Ireland. It does not include the Japan.
What is ideological conflict?
A war of ideas is a dispute or disagreement between competing ideas, ideologies, or conceptions in which countries or organizations utilize strategic influence to advance their objectives abroad.
As a result of the conflict, numerous countries, including Korea, Vietnam, Germany, and Ireland, have been separated into two political entities.
Japan's politics are governed by a dominant-party bicameral parliamentary constitutional monarchy, hence it is not separated into two political entities.
Therefore, option e is correct.
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