When did "the West" take shape as a self-aware area of culture and civilization?

Question

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The concept of the West as a distinct cultural and political entity began to emerge towards the end of the eleventh century, particularly with the Crusades bringing Europeans into contact with the Islamic world and sparking a sense of collective identity based on shared values and beliefs. This idea was reinforced by the development of national monarchies, the growth of universities, and the spread of Christianity.

When Did "The West" Take Shape as a Self-Aware Area