Question

how since age india had connective with the world land routes and sea routes

Answer 1

Before find sea routes to India, the land routes were widely used by the  travellers and investors.Land routes in India were used for trade and transport
India was the hub of many international markets and served as the centre for trade.Due to land routes in India, markets flourished in eastern Asia like china , Taiwan etc . People started travelling and exploring the eastern Asia which helped in development of science and sharing of ideas