Tantra, by that name, derives from Vedic/Hindu religions, and was most common in Northern India, although it became mixed together with Southern Indian local religions such as the worship of Kali.
The Kama Sutra is an ancient Indian Hindu text widely considered to be the standard work on human sexual behaviour in Sanskrit literature written by Vatsyayana. A portion of the work consists of practical advice on sexual intercourse.
The Kamasutra is the Epic of sex positions. It was written in India in Sanskrit – historian’s think it first appeared between 400 BCE and 200CE