Our modern history starts from roughly 20000 years earlier. Aztecs could not go beyond a mere 4000 – 5000 years. The empire of Sumerians recorded up to 250000 years. Babylon was a little further, maintaining a journal of 400000 years. Legendary Egyptians reached their limit at 100000 years. Ancient Mayans stands apart from this list, who had the concept of cyclic time and a mechanism to measure a billion year long cycle. But all of them combined, is dwarfed by enormity and complexity of the ancient Bharat almanac.
The ruthless Chakra-Vyuha was not known for killing with a fatal blow, instead it used to tear the enemy apart, flesh by flesh ; it allowed the enemy to scream in agony ; it calmly observed the enemy giving his everything to break free ; it watched in amusement when the enemy brought out every last bit of valor left, as a desperate attempt ; and at last, when there was nothing remained for him to continue fighting, then with just another gentle stroke, it used to stop the heart beat forever. No wonder, out of 18 Akshauhini Mahabharata warriors, only 7 dared to enter a Chakra-Vyuha, willingly.