The French Revolution was sparked by growing economic and social inequality between the three estates. The Third Estate, which represented the common people, bore the tax burden but had little political power. They rebelled in 1789, storming the Bastille and forcing King Louis XVI to accept a constitutional monarchy. However, tensions remained and radical factions grew more powerful. The monarchy was overthrown and Louis XVI was executed in 1793, marking the onset of the Reign of Terror by the Jacobins to consolidate the Revolution.