Correct Option: D

The Clash of Civilizations is a theory that people's cultural and religious identities will be the primary source of conflict in the post-Cold War world. It was proposed by political scientist Samuel P. Huntington in a 1992 lecture at the American Enterprise Institute, which was then developed in a 1993 Foreign Affairs article titled "The Clash of Civilizations?", in response to Francis Fukuyama's 1992 book, The End of History and the Last Man.