Where did the Religion start?

the hindu religion started in northern India. It was also near the Indus river. today now is all over the world

Who is the founder?

Hinduism has neither a specific moment of origin nor a specific founder. Known as Sanatana Dharma a sacred text. Many followers no founders.

What basic beliefs do the believe in?

The Hindu people believe in many things. They are polytheistic, but have three main gods Brahma ,the creator, Siva, the destroyer, and Vishnu, The preserver. They also believe in reincarnation. Everyone has a soul or atman. Karma can effect you in good or bad ways.

Where did Hinduism spread.

started from India then on. They divided into two groups. The two groups spread down in Southwest Asia.