declared separatist movement, it openly challenged the emperor's claim to power. The century between the Humiliation of Canossa (1077) and the Treaty of Venice of 1177 resulted in the formation of city states independent of the Germanic emperor. A series of wars in Lombardy from 1423 to 1454 reduced the number of competing states in Italy. The next forty years were relatively peaceful in Italy, but in 1494 the peninsula was invaded by France. After the Imperial Reform of 1495–1512, the Italian kingdom corresponded to the unencircled territories south of the Alps. Juridically the emperor maintained an interest in them as nominal king and overlord, but the "government" of the kingdom consisted of little more than the plenipotentiaries the emperor appointed to represent him and those governors he appointed to rule his own Italian states. The Habsburg rule in several parts of Italy continued in various forms but came to an end with the campaigns of the French Revolutionaries in 1792–1797, when a series of sister republics were set up with local support by Napoleon and then united into the Italian Republic under his presidency. In 1805 the Republic became a new Kingdom of Italy, in personal union with France. Lombard kingdom After the Battle of Taginae, in which the Ostrogoth king Totila was killed, the Byzantine general Narses captured Rome and besieged Cumae. Teia, the new Ostrogothic king, gathered the remnants of the Ostrogothic army and marched to relieve the siege, but in October 552 Narses ambushed him at Mons Lactarius (modern Monti Lattari) in Campania, near Mount Vesuvius and Nuceria Alfaterna. The battle lasted two days and Teia was killed in the fighting. Ostrogothic power in Italy was eliminated, but according to Roman historian Procopius of Caesarea, Narses allowed the Ostrogothic population and their Rugian allies to live peacefully in Italy under Roman sovereignty. The absence of any real authority in Italy immediately after the battle led to an invasion by the Franks and Alemanni, but they too were defeated in the battle of the Volturnus and the peninsula was, for a short time, reintegrated into the empire. The Kings of the Lombards (, singular ) ruled those Germanic people from their invasion of Italy in 567–68 until the Lombardic identity became lost in the ninth and tenth centuries. After 568, the Lombard kings sometimes styled themselves Kings of Italy (). Upon the Lombard defeat at the 774