Question

Which of these have played the most important role in establishing and maintaining the strong sense of national identity held by the people of France?

the French Revolution
the Roman conquest
language and culture
Bordeaux and the Riviera

Answer 1

Which of these have played the most important role in establishing and maintaining the strong sense of national identity held by the people of France?

the French Revolution

Answer 2

It would be primarily the "French Revolution" that has played the most important role in establishing and maintaining the strong sense of national identity held by the people of France, since this revolution did away with the monarchy and ushered in an era of (relative) governance eventually.