Original: The period between the 3rd century and 6th century CE is known as the Golden Age of India because of the large achievements Indians made in the fields of science, technology, engineering, art, dialectic, literature, logic, mathematics, astronomy, religion and philosophy during the Gupta Empire.
Simplified: The period between the 3rd century and 6th century CE is known as the Golden Age of India because of the large achievements Indians made in the fields of mathematics, astronomy, science, religion and philosophy during the Gupta Empire.