Verdun (vɜːrˈdʌn, alsoUKˈvɛərdʌn, USvɛərˈdʌn, vɛʁdœ̃; official name before 1970 Verdun-sur-Meuse) is a large city in the Meuse department in Grand Est, northeastern France. It is an arrondissement of the department. Verdun is the biggest city in Meuse, although the capital of the department is Bar-le-Duc, which is slightly smaller than Verdun. It is well known for giving its name to a major battle of the First World War. Verdun is situated on both banks of the river Meuse, in the northern part of the Meuse department. It is connected by rail to Jarny. The A4 autoroute Paris–Metz–Strasbourg passes south of the town. Verdun (Verodunum, a latinisation of a place name meaning "strong fort" in Gaulish) was founded by the Gauls. It has been the seat of the bishop of Verdun since the 4th century, with interruptions. In 486, following the decisive Frankish victory at the Battle of Soissons, the city (amongst several other nearby cities) refused to yield to the Franks and was thus besieged by King Clovis I. The 843 Treaty of Verdun divided Charlemagne's empire between his three surviving sons. Around this time, a city called Verdun was the centre of the thriving European trade in young boys who were sold to the Islamic emirates of Iberia, where they were enslaved as eunuchs. The Italian ambassador Liutprand of Cremona, as one example in the 10th century, presented a gift of four eunuchs to Emperor Constantine VII. The identity of the "Verdun" mentioned in sources is disputed, because there are many cities called Verdun in Europe (such as Verdun-sur-Garonne in Occitania, and Verdun-sur-le-Doubs). While many still identify it as Verdun on the Meuse, some argue that Verdun-sur-le-Doubs is a more feasible identification. It is also possible that Liutprand was referring to Verona. From 1200 onward, Verdun has been famous for its Dragées or sugared almonds; they were distributed at the baptism of French princes. Verdun was part of the middle kingdom of Lotharingia, and in 1374 it became a free imperial city of the Holy Roman Empire.