Final answer:
The French support of the American Revolution increased problems for King Louis XVI by straining the economy, inspiring unrest and demands for reform, and ultimately leading to his execution.
Step-by-step explanation:
Louis XVI approved French military support for the American colonies in their successful struggle against the British, but the expense nearly bankrupted the country.
The French support of the American Revolution increased problems for King Louis XVI in several ways.
First, France's involvement in the war strained the country's economy, leading to a significant economic crisis. This crisis was exacerbated by the king's extravagant spending, which further worsened France's financial situation.
Second, the French Revolution that followed the American Revolution inspired critics of absolutist monarchy in France to agitate for change. The success of the American Revolution showed that it was possible to challenge monarchical power, leading to increased unrest and demands for reform.
Finally, the French Revolution resulted in the execution of King Louis XVI and his queen, Marie Antoinette, as part of the Reign of Terror. This further destabilized the monarchy and ultimately led to the end of Louis XVI's reign.