eastern Hungarian Körös tributaries, the early Bronze Age first saw the introduction of the Makó culture, followed by the Otomani and Gyulavarsánd cultures. The late Bronze Age Urnfield culture (1300–750 BC) is characterized by cremation burials. It includes the Lusatian culture in eastern Germany and Poland (1300–500 BC) that continues into the Iron Age. The Central European Bronze Age is followed by the Iron Age Hallstatt culture (800–450 BC). Italy The Italian Bronze Age is conditionally divided into four periods: The Early Bronze Age (2300–1700 BC), the Middle Bronze Age (1700–1350 BC), the Recent Bronze Age (1350–1150 BC), the Final Bronze Age (1150–950 BC). During the second millennium BC, the Nuragic civilization flourished in the island of Sardinia. It was a rather homogeneous culture, more than 7000 imposing stone tower-buildings known as Nuraghe were built by this culture all over the island, along with other types of monuments such as the megaron temples, the monumental Giants' graves and the holy well temples. Sanctuaries and larger settlements were also built starting from the late second millennium BC to host these religious structures along with other structures such ritual pools, fountains and tanks, large stone roundhouses with circular benches used for the meeting of the leaders of the chiefdoms and large public areas. Bronze tools and weapons were widespread and their quality increased thanks to the contacts between the Nuragic people and Eastern Mediterranean peoples such as the Cypriots, the lost waxing technique was introduced to create several hundred bronze statuettes and other tools. The Nuragic civilization survived throughout the early Iron Age when the sanctuaries were still in use, stone statues were crafted and some Nuraghi were reused as temples. Northern Europe In northern Germany, Denmark, Sweden and Norway, Bronze Age cultures manufactured many distinctive and artistic artifacts. This includes lur horns, horned ceremonial helmets, sun discs, gold jewelry and some unexplained finds like the bronze "gong" from Balkåkra in Sweden. Some linguists believe that an early Indo-European language was introduced to the area probably around 2000 BC, which eventually became Proto-Germanic, the last common ancestor of the Germanic languages. This would fit with the apparently unbroken evolution of the Nordic Bronze Age into the most probably ethnolinguistically Germanic Pre-Roman Iron Age. The age is divided into the periods I–VI, according to Oscar Montelius. Period Montelius V, already belongs to the Iron Age in other regions. British Isles In Great Britain,