Total collapse of the economy, finances, and capital. Hyperinflation devastated the economy, and country had to default on obligations and debt. Improvements happened after Napoleon’s reforms and by widespread confiscation of wealth from Europe (for example by asking Austria to pay for a war reparations). Anarchy and mob violence, counter-revolution, and civil war caused death to hundreds of thousands citizens. Entire regions were depopulated by burn land tactics, and cities like Lyon destroyed. It was the biggest outbreak of violence in Europe between 30Y War and WWI.
The extreme measures during the crisis brought a legislation that ended democracy and created first modern totalitarian system under Terror. Constitution was suspended indefinitely, and state implemented widespread judicial murders of its critics and the opponents. Intellectual potential of the state was decimated at the guillotine or by exile. One point, almost entire French academy was tried for treason in May/June 1794. Revolution was negatively taken by rest of Europe, which was dragged for 25 years into coalition wars with France.