In Assassin's Creed Unity, which major historical event begins Arno Dorian's story in Paris?

In Assassin's Creed Unity, the French Revolution begins Arno Dorian's story in Paris.

The game opens in 1789, when political and social upheaval transforms France. Arno is drawn into the Assassin–Templar conflict after the death of his adoptive father, François de la Serre, and his personal investigation unfolds alongside the Revolution.

Unity portrays famous locations and figures from revolutionary Paris, including the Bastille, the Palace of Versailles, and Maximilien Robespierre. The game uses the period as a dramatic setting rather than presenting every event as a literal historical record.

The American Revolution belongs primarily to Assassin's Creed III, while the Industrial Revolution is the backdrop of Syndicate. The July Revolution took place in France in 1830, decades after Unity’s main story, so it is not the event that starts Arno’s campaign.