Hinduism developed from the Vedic religion, which was polytheistic.

vedic religion

vedic religion!

No. Swami Dayanand is just a follower and preacher of Hinduism. He was a Vedic Philosopher who revived Hinduism with its true Sanatan Vedic philosophy and thought.

Hinduism is formed of diverse traditions and has no single founder. Among its direct roots is the historical Vedic religion of Iron Age India and, as such, Hinduism is often called the "oldest living religion" or the "oldest living major religion" in the world.

The Vedic god of storm and war was Indra. He was a very powerful and dangerous god in the Vedic religion.