Nagarjuna was also termed as the Indian Einstein. He proposed the Theory of Relativity in his time in the form of a Sutra which is also called as the Prajna Parimata Sutra. He was a great patron of Mahayana doctrine.
Lothal is located between the Sabarmati river and its tributary Bhogavo, in the Saurasthra region of Gujarat. Its dockyard was well connected with the river Bhogavo.