What was known as the Golden Age of India?

The period between the 4th century CE and 6th century CE is considered the Golden Age of India. The reason behind it is that during this time, India had progressed hugely in the fields of mathematics, religion, philosophy, astronomy, mathematics and science. this was the period of the Gupta's. The decimal system and the concept of zero evolved during this time period. The Gupta's can be credited for the fact that during their reign this kind of huge progress was made in several fields. It was a time of peace and prosperity. The Golden Period came to an end due to the falling of the Gupta's at the hands of the Hunas during 6th century CE.