The Celts were a diverse group of tribal societies in Iron Age and Roman-era Europe who spoke Celtic languages.
The Proto-Celtic language, also called Common Celtic, is the reconstructed ancestor language of all the known Celtic languages.
The Hallstatt culture was the predominant Central European culture from the 8th to 6th centuries BC (European Early Iron Age), developing out of the Urnfield culture of the 12th century BC (Late Bronze Age) and followed in much of Central Europe by the La Tène culture.
The Tarim mummies are a series of mummies discovered in the Tarim Basin in present-day Xinjiang, China, which date from 1800 BCE to 200 CE. Some of the mummies are frequently associated with the presence of the Indo-European Tocharian languages in the Tarim Basin, although the evidence is not totally conclusive.
The Tarim Basin is a large endorheic basin occupying an area of about 906,500 km2 (350,000 sq mi). It is located in the Xinjiang Uyghur Autonomous Region in China's far west.
Celtic mythology is the mythology of Celtic polytheism, apparently the religion of the Iron Age Celts. Like other Iron Age Europeans, the early Celts maintained a polytheistic mythology and religious structure. Among Celts in close contact with Ancient Rome, such as the Gauls and Celtiberians, their mythology did not survive the Roman empire, their subsequent conversion to Christianity, and the loss of their Celtic languages.
The Bronze Age of a culture is the period when the most advanced metalworking (at least in systematic and widespread use) in that culture used bronze. This could either have been based on the local smelting of copper and tin from ores, or trading for bronze from production areas elsewhere.