| Period | Geographical Spread | Key Developments | |--------|---------------------|------------------| | | Kashi, Ujjain, South‑India | Integration with Shaiva Siddhānta ; emergence of Kapalikā rites. | | Medieval (10th‑15th c.) | Rajasthan, Bengal, Nepal | Syncretism with Vaisnava Madhura bhakti; emergence of “ Bhairava‑Mata ” folk deities. | | Early Modern (16th‑18th c.) | Deccan, Assam | Patronage by Maratha and Mysore courts; codification of Bhairava‑paddhati . | | Colonial & Post‑colonial (19th‑21st c.) | Global diaspora (USA, UK, Singapore) | Digital transmission (YouTube bhajans, mobile apps), therapeutic use in “shadow‑work”. |