How far did economic suffering by the Third Estate in the period to 1789 precipitate the French Revolution?

One of the major motivators for radicalization within a population, French or otherwise, is economic distress (or the fear of it). Weimar Germany's middle classes were virtually exclusively the source of the nazis' parliamentary victories.

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nothing certain is known about what happened, but it seems that the country declined gradually, perhaps due to bad government, or, more likely, due to a series of bad harvests, which resulted in widespread and recurrent famine.