How much did the american revolution and the seven year war cost the french?

The french spent 1.3 billion livers on war costs.

During the war, France shouldered a financial burden similar to that of Great Britain, as debt from the American Revolutionary War was piled upon already existing debts from the Seven Years' War. The French spent 1.3 billion lives on war costs.

Because broadest terms allows the law flexibility depending on changing society and circumstances.