Ravana was the king of Sril Lanka in a notorious light. But most people recognize the acknowledge his power of scientific and wisdom he used in practice. He was deft in the creation of the optimal use of chemicals and gases, including hydrogen for flying in the air and other gases to even make people go crazy with laughter, and sometimes to affect enemy with the gases are known to be used as a weapon to make them see their illusions to confuse during the fight.
Ravana was a half-Brahmin and half-demon. His father was Vishwashrava a Rishi belonging to the Pulastya clan and Kaikasi mother was a demon clan.
Since Ravana is one of the most learned scholars ever lived, Ram asked his brother Lakshmana sit beside a dying demon king and learn from him important lessons in statecraft and diplomacy.
Ravana was killed by King Anaranya dynasty to the Ikshawku dynasty to which Lord Rama belongs.
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