Vinayak Damodar Savarkar coined which term, which became an official ideology of the Bharatiya Janata Party?
Vinayak Damodar Savarkar:  Savarkar coined the term "Hindutva" (Hinduness) to create a collective "Hindu" identity as an essence of Bharat (India). Hindutva: Hindutva ("Hinduness"), a term popularised by Vinayak Damodar Savarkar in 1923, is the predominant form of Hindu nationalism in India. Hindutva:  The Bharatiya Janata Party (BJP) adopted it as its official ideology in 1989.
Hindutva