Question

what was the greatest cause of the financial bankruptcy and the consequent decline of the French morachy​

Answer 1

2 Death of the Old Regime

The immediate cause of the Revolution was that the French monarchy faced imminent bankruptcy. (This was partly because of the enormous sums it had spent assisting the American Revolution between 1778 and 1781 in order to discomfort the traditional enemy, Britain.)

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Answer 2

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The immediate cause of the Revolution was that the French monarchy faced imminent bankruptcy. (This was partly because of the enormous sums it had spent assisting the American Revolution between 1778 and 1781 in order to discomfort the traditional enemy, Britain.) Neither nobility nor clergy paid direct tax.