The Welsh judge Sir William Jones founded the Asiatic Society in Calcutta in 1784, he studied palm leaf manuscripts of Sanskrit, the first Indo-European language, the similarities between Greek, Latin and his native Welsh led him to discover that the Celtic, Germanic, Baltic, Slavic and Armenian languages also had similarities with Sanskrit. He then investigated the Aryan tribes who were the original speakers of this mother language. These nomadic tribes had settled and farmed in many places in central Asia and became literate. Many of the manuscripts were composed by the Aryans, recording their oral tales, such as the Rigveda, that pre-dates the Bible, the word Rig means praise-verse and Veda means knowledge, so many palm leaf books that the term Vedic-Sanskrit was used. It was found within the text that the Aryan Bronze Age started round about 2000BC, the Celtic Halstatt period was 1200BC.
The Russian archaeologist Victor Sarianidi discovered a lost Aryan civilisation in the Karakum Desert in the 1970's, not far from Asgabat, near the Turkmenistan-Iranian border, the desert was a fertile plain with agricultural activities, some burial sites that Victor unearthed looked almost Celtic in lay-out, a body laid in a cart with the wheels laying flat.
The wandering tribes of the Aryan traded with other civilisations, pushing out in all directions, but some went south, establishing new settlements in Pakistan and India, with their literacy some became Brahmin priests, recording chants and mantras onto palm leaf manuscripts. This Bronze Age chanting still continues to this day, linguists have studied the Sanskrit and the sound-patterns, discovering at times that it was of no known language, but birdsong interpretation, it is known that the Druids did the same. Sanskrit words are at the root of English names, here are a few examples of river names. The Great Ouse, from the Sanskrit word udan, which means water. The rivers Tamar, Thames and Tame, all derived from the Sanskrit word Tamas, which means darkness.