Nobody knows. If you figure it out then you will be world famous.
India
India
Buddhism originated in northern India, and developed from Hinduism.
Although Hinduism cannot be attributed to one specific person, it is the oldest and extant religion that dates back to before 6500 B.C. However, there is no exact date for its origin or formation.
There is no known date when Hinduism began. We have artifacts of Hindu origin that are about 28,500 years old so Hinduism began in at least 30,500 years ago, but it probably began before that.
That is enveloped in hoary mythology. What is now Hinduism may have started at the time when humans first came to India from Africa, 60,000 years ago. It must have changed a thousand times, but there is no reason to suppose a break.
India
th origin of Hinduism is Lord Brahma himself. Hinduism 4 vedas are the most holy scriptures of hinduism. there after mahabharata and ramayan bhagwat geeta are important. after that puranas upnishada are sacred.
Hinduism is considered as the mother of all religions. Hinduism exists before all the other religions exists. Hinduism born in India. India is the oldest country we doesn't consider about years and time. We doesn't have even date of births of our gods Krishna and Rama etc. So i can say that Hinduism exists from origin of India.
Hinduism does not evolve due to a leader or a scholar or a teacher. It is a way of life. It is developed by people as a life style. That is why its origin is mysterious.
according to Mythology Lord Shiva was the main founder and origin of Hinduism. Also recently Shree shankaracharya is credited for reuniting Hinduism.
it is india.