What does the phrase "an earthshaking cultural shift" suggest about the impact of the Renaissance in Europe?

It suggests that the Renaissance had a multidimensional transformative cultural impact across Europe.

Explanation:

The Renaissance is a period of an extensive cultural movement that developed in Europe during the 19th century. After the scientific setback that took place during the Middle Ages, the Renaissance brought such a great cultural change that it had an important impact in different areas of the life of Europeans, and laid the foundations for the scientific development that would develop later in the Modern Period.  

During the Renaissance, new social, cultural, artistic, literary, and scientific ideas were developed through the study of Roman and Greek cultures. These ideas led to social changes that would lead to great subsequent social movements, such as the Protestant reform.

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it was the "4. potsdam" conference that demanded the unconditional surrender of japan, since it was clear that the japanese would continue to find until the very last man otherwise.