Tensions were high, and led to the largest abuse in the city's postwar history, when the Paris police, told wrong news about policemen having been murdered by independentists, massacred an estimated 300 pro-independence demonstrators on 17 August 1961; remarkably, the event, though known in some circles, was largely ignored until the 1990s. (See Paris massacre of 1961)
Civil war broke out in France after the assassination of Louis of Valois, Duke of Orléans by the Burgundian John the Fearless. In the ensuing chaos, the English captured Paris in 1420. In 1422, Henry V of England died at the Chateau de Vincennes, just outside the city.
Prior to 1968, département 75 was the Seine département, which contained the city of Paris and its immediate suburbs. The splitting up of the Seine département resulted in the creation of four new départements: Paris proper (75), and three départements (Hauts-de-Seine, Seine-Saint-Denis and Val-de-Marne) forming a ring around Paris, often called la petite couronne (i.e. the "small ring", as opposed to the "large ring" of the more distant suburbs of Paris).
Under Napoleon's rule, Paris became the capital of an empire and military superpower. He crowned himself Emperor in a ceremony held in Notre-Dame on 18 May 1804. Like his royal predecessors, he saw Paris as a "new Rome" and set about building public monuments befitting the capital of an empire. Some of these were conscious copies of great Roman buildings, such as the Église de la Madeleine.
By this time, Paris was a typically crowded early medieval city with timber buildings alongside surviving Roman remains. According to the chronicler Geoffrey of Tours, it suffered a disastrous fire in 585. The city grew beyond the boundaries of the Ile, with suburbs being established on both banks of the river.
Louis and those who supported an agreement with the monarchy were accused by the radical Jacobins of being the stooges of foreign powers, and on 10 August 1792 a mob demanded that the National Assembly depose the king. When the demand was refused, the mob attacked the Tuilleries and seized the royal family. Power now passed to the radical Commune de Paris, led by Georges Danton, Marat and Robespierre.
Lutetia was a prosperous place and occupied a very strategic position on the river, controlling shipping in both directions. It came under Roman control after the revolt of 52 BC when Vercingetorix led a Celtic uprising against the Romans under Caesar.
With the recapture of the city, the Valois monarchs and French nobility sought to impose their authority on the city through the construction of various grandiose ecclesiastical and secular monuments, including churches and mansions. Over the following century the city's population more than tripled. Francois I had probably the greatest impact of any Valois monarch, transforming the Louvre and establishing a glittering court including such notables as Leonardo da Vinci and Benvenuto Cellini.
The town sided with the rebels and was said to have contributed 8,000 men to Vercingetorix's army. It was garrisoned by Vercingetorix's lieutenant Camulogenus, whose army camped on the Mons Lutetius (where the Panthéon is now situated). The Romans crushed the rebels at nearby Melun and took control of Lutetia.
Under Roman rule, the town was thoroughly Romanised and grew considerably. It was, however, not the capital of its province, Lugdunensis Senona - that role was played by Agedincum (modern Sens, Yonne). It was Christianised in the 3rd century when St Denis became the city's first bishop. The process was not entirely peaceful - in about 250 St Denis and two companions were arrested and decapitated on the hill of Mons Mercurius, thereafter known as Mons Martis (Martyrs' Hill, now Montmartre).