What wars did france participate in that depleted their treasury

The French and Indian War, and The American Revolution                                      

Explanation:

The participation of France in the French and Indian War first drained the treasury and later the American Revolution.

France entered into financial crises during the reign of King Louis XV, who dispatched six regiments to New France in 1755 that led to the French and Indian War. France financial situation went further down when they took participation in the American Revolution of 1775. The country was in enormous debt, and it had to increase its taxes.  

here you go hope it heps "horace mann"