Final answer:
France's alliance with American colonies led to a financial crisis and spurred revolutionary ideas, contributing to the French Revolution.
Step-by-step explanation:
As a result of its alliance with the American colonies, France experienced a financial crisis and the spread of revolutionary ideas. The assistance provided to the American Revolutionary War was a significant economic strain on France's already troubled finances, exacerbated by the king's extravagant spending. Furthermore, the victory of the American revolution sparked encouragement for revolutionary movements within France. This financial turmoil contributed to the onset of the French Revolution, where Enlightenment ideals further fueled the populace's desire for change. The support of the American cause did not bring immediate material benefits; instead, it added to the financial pressures and contributed to a broader revolutionary spirit that eventually toppled the French monarchy.