Prime Minister Narendra Modi on Tuesday said India will become the growth engine for the world in the coming years, and the ease of doing business has improved with "mission-mode" reforms being undertaken by his government. Speaking at the BRICS Business Forum Leaders' Dialogue here, PM Modi also said India soon will become a USD 5 trillion economy. He told the gathering that India has the world's third-largest startup ecosystem and there are over 100 unicorns in the country.