Answer:
Indians invented zero and the number system, one of the greatest innovations in history. The decimal system, the value of pi, algebra, trigonometry, calculus and many mathematical concepts were all born in India.
Ancient India was a land of sages and seers as well as a land of scholars and scientists. Research has shown that from making the best steel in the world to teaching the world to count, India was actively contributing to the field of science and technology centuries long before modern laboratories were set up.
A significant attribute of ancient Indian culture has been the commingling of cultural elements from the north and south, and from the east and west. Ancient India also saw the birth of Brahmanism or Hinduism, Jainism, and Buddhism, but all these cultures and religions intermingled and interacted.