Shaivism

Shaivism is a form of Hinduism, which sees Shiva as the most important deity. In practice, there are different branches of Shaivism. Shaivism is common in India, Nepal and Sri Lanka. It can also be found in Malaysia, Singapore, and Indonesia.
Shaivism are routed from southern part of India, mainly from present day Tamil Nadu, The oldest shiva temples in the state are living proof for that..Major Kings ruled Southern India also considered Lord Siva as their God