Question

how did the emergence of regional kingdom benefits the European traders in India ​

Answer 1

The first direct sea-route from Europe to Indiavia Cape of Good Hope was opened by Vasco-da-Gama who reached the coast of Calicut in May 1498. ... He comes to India as the representative of the king of Portugal. Therefore, the Portuguese were the first European nations who settled down in India as traders.
In the 17th century, the Portuguese, English, and the Dutch were starting to trade with the Mughal empire. ... The Mughals wereoverusing alcohols, so they got a lot from the Western-Europe. Also, they were trading hemp (a plant for making fabric) for textiles, and the two main crops traded were sugarcane and cotton.