[citation needed] As with a rise of globalization, the importance of the nat religion on modern Myanmar and its people has been diminished.
The formalizing of the official 37 Great Nats by King Anawrahta (1044–1077) of Bagan, has been interpreted as Burmanisation and establishment of Bamar supremacy in the Irrawaddy valley after the unification of the country and founding of the First Burmese Empire.
[citation needed] The widespread traditional belief among rural communities that there are forest guardian spirits called taw saung nats (တောစောင့်နတ်) and mountain guardian spirits called taung saung nats (တောင်စောင့်နတ်) appears to act as a deterrent against environmental destruction, up to a point.
[4] Taungbyone, north of Mandalay in Madaya Township, is another major site with the festival held each year starting on the eleventh waxing day and including the full moon in the month Wagaung (August).
[2] Nats are ascribed human characteristics, wants, and needs; they are flawed, having desires considered derogatory and immoral in mainstream Buddhism.
[6] Music, often accompanied by a hsaing waing ("orchestra"), adds much to the mood of the nat pwè, and many are entranced.
The nat kadaws as an independent profession made their appearance in the latter half of the 19th century as spirit mediums, and nat kannahs are more of an urban phenomenon which evolved to satisfy the need of people who had migrated from the countryside to towns and cities but who wished to carry on their traditions or yo-ya of supplicating the mi hsaing hpa hsaing tutelary deities of their native place.