According to researchers, the Hindu religion has been in practice since as early as 3000 B.C.; however, there is no consensus on an exact starting date. The religion's traditions began with the Indus valley civilization, in the region of present-day northwest India.
Over the next 2000 years, Hinduism traditions spread out across Southeast Asia through Sanskrit texts, rituals, and performing and visual arts.
Although the Hindu religion is considered the oldest religion in the world, the term "Hindu" traces back to 14th century A.D. Arabs, Persians and Afghans used the term as a description of the people who lived in the Indus valley. The British then attributed the word "Hindu" to the religious practices of those people in the 19th century.