Founded by tribes of Insubrian Celts, Milan was conquered by the Romans in 222 B.C., though the population was not really subdued until early in 2 B.C. The Romans called it Mediolanum. It became the Imperial headquarters and the residence of Massimianus in 286. Construction started on many basilicas after the Edict of Milan in 313 and it eventually became the Western Church's most influential city. It was Capital of the Empire until 402 when the title passed to Ravenna. Northern Italy was later called Langbard and Milan became the main city of the new kingdom. In the 11th century the city again grew in importance and independence from the Holy Roman Empire. Later destroyed by Federico I Barbarossa, it was reborn after the Battle of Legnano, with the victory of the Lombard League, on May 29th 1176. Milan was governed by the Visconti and Sforza families during the late Middle Ages and the Renaissance. It was later conquered by France, by Spain and then by Austria. It was the Capital of the Cisalpine Republic from 1796 to 1799, Capital of the Italian Republic from 1802 to 1805 and Capital of the Italian Republic from 1805 to 1814. After the second war of independence (1859), it became part of the Kingdom of Sardinia and the Kingdom of Italy from 1861. The city was badly shocked by the accident to the Pirelli Skyscraper on April the 18th 2002, when a small private airplane crashed into it, devastating a large area devoted to the Regional offices and killing two of the staff.