Final answer:
The French Revolution of 1789 marked France's greatest catalyst for change, bringing about major political, social, and economic transformations.
Step-by-step explanation:
The historical event that started France's greatest catalyst for change was the French Revolution of 1789. This revolution was a period of radical social and political upheaval in France, which resulted in the overthrow of the monarchy, the rise of radical political factions, and the establishment of the First French Republic.
During the French Revolution, the power of the aristocracy was challenged, and the feudal system was abolished. The revolution brought about major changes in French society, including the declaration of the rights of man and citizen, the restructuring of the government, and the secularization of society.
Overall, the French Revolution of 1789 marked a significant turning point in French history, leading to a series of political, social, and economic transformations that laid the foundation for modern France.
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