Question

how did french support of the american revolution increase problems for king louis xvi?
it accelerated the economic crisis.
it introduced new ideas regarding branches of government.
it helped prove that monarchs could no longer exist
it showed that a rigid class structure was dangerous

Explanation:

French support for the American Revolution involved significant military spending and loans, worsening France's pre-existing financial troubles. This accelerated the economic crisis, straining King Louis XVI's ability to govern and contributing to social unrest that preceded the French Revolution.

Answer:

It accelerated the economic crisis.