Cultural: The Enlightenment philosophy made the King and Church less important and promoted a new society based on reason instead of tradition.
Social: The emergence of an influential bourgeoisie which was formally part of the Third Estate but had evolved into a caste with its own agenda and aspired to political equality with the clergy and the aristocracy.
Financial: Frances' debt led Louis XVI to implement new taxations and to reduce privileges.
Political: Louis XVI faced virulent, Very strong, opposition from provincial parlements which were the spearheads of the privileged classes' resistance to royal reforms.