Hospitality Services are networks of people who exchange accommodation. Usually, no money is involved. This gives travellers the chance to stay with locals instead of in hotels or hostels, getting a better perspective on the culture they visit and saving money.
Agritourism - stay and work at farms while travelling
... is Vedic, in which the Vedas, the earliest Sanskrit texts, were composed. The earliest of the Vedas, the R^igveda, was composed in the middle of the second millennium BC. ...