Hinduism is the most ancient code of ethics that's been followed in the world, the most ancient Dharma. Hinduism was not only limited to the Indian subcontinent. As a matter of fact, Hinduism has its firm footprints as far away as Europe and Africa.
The World Parliament of Religions was sponsored by the Unitarians and Universalists of the Free Religious Association, and was a part of the greater Columbian Exposition held for several months in 1893, in Chicago, which was attended by over 27 million people.
15 years back current Indian PM Shri Narendra Modi in an interview aptly said that 'Dharma is NOT the same as Religion',and went to add that Dharma has NO equivalent in the Western lexicon.
"The law of conservation of energy" which has been stated by Sri Krishna around 3100 B.C. (Archaelogical survey of India says that the Kurukshetra war took place around 3100 B.C.)