You forgot the Gupta Empire from mid 3rd century CE to mid 6th century CE. Aryabhatta - the famous mathematician was a product of this age.
The empire unfortunately promulgated the extensive spread of Buddhism, became pacifist and passive and was easily invaded and looted by invaders from Central Asia. The late Gupta empire's army was a joke - only existed on paper.
The fall of Indian civilization from the 7th century on-wards is very painful to read. No military of any note - Islamic invaders would regularly invade and loot and burn great temples and libraries every few years with little to no trouble. Foundational records and knowledge of ancient India was utterly annihilated. So much critical informational on Aryuveda, astronomy, mathematics and the physical sciences was lost forever. Some libraries were so huge, they burned for days.
Islam was at the height of its military era at the time and easily destroyed and annexed other passive cultures. Lots of journals of invaders from that time that documented their utter contempt for peoples who couldn't defend themselves.
The West had learned this lesson early and well from the Roman era: Si vis pacem, para bellum.
The empire unfortunately promulgated the extensive spread of Buddhism, became pacifist and passive and was easily invaded and looted by invaders from Central Asia. The late Gupta empire's army was a joke - only existed on paper.
The fall of Indian civilization from the 7th century on-wards is very painful to read. No military of any note - Islamic invaders would regularly invade and loot and burn great temples and libraries every few years with little to no trouble. Foundational records and knowledge of ancient India was utterly annihilated. So much critical informational on Aryuveda, astronomy, mathematics and the physical sciences was lost forever. Some libraries were so huge, they burned for days.
Islam was at the height of its military era at the time and easily destroyed and annexed other passive cultures. Lots of journals of invaders from that time that documented their utter contempt for peoples who couldn't defend themselves.
The West had learned this lesson early and well from the Roman era: Si vis pacem, para bellum.