You are lying to yourself if you believe that India was independent before 1947.
Read the post above, and stop reinventing the wheel.
Since you Chinese folks out there love your history and make all your territorial claims based on the assumptions on dynasties that ruled your lands likewise,then I am sure you pay attention to the Indian side of history.
The last paragraph would make a lot of sense to your tall claims that, India was not known as India prior 1947 to rubbish!
https://www.britannica.com/place/Magadha
Magadha, ancient kingdom of
India, situated in what is now west-central
Bihar state, in northeastern India. It was the nucleus of several larger kingdoms or empires between the 6th century bce and the 8th century ce.
The early importance of Magadha may be explained by its strategic position in the
Ganges (Ganga) River valley, enabling it to control communication and trade on the river. The river further provided a link between Magadha and the rich ports in the
Ganges delta.
Under King
Bimbisara (reigned
c. 543–
c. 491 bce) of the Haryanka line, the kingdom of Anga (eastern Bihar) was added to Magadha. Kosala was annexed later. The supremacy of Magadha continued under the
Nanda (4th century bce) and
Mauryan (4th–2nd century bce) dynasties; under the Mauryan
dynasty the empire included almost the entire subcontinent of India. The early centuries ce saw the decline of Magadha, but the rise of the
Gupta dynasty in the 4th century brought it once more to a position of preeminence. Not only did these imperial
dynasties begin by establishing their power in Magadha but in each case Pataliputra (adjacent to modern
Patna) was the imperial capital, thus adding to the
prestige of Magadha.
Lively accounts of Pataliputra and Magadha are available in the
Indica of the Greek historian
Megasthenes (
c. 300 bce) and in travel diaries of the Chinese Buddhist pilgrims
Faxian and
Xuanzang (4th–5th and 7th centuries ce). Many sites in Magadha were sacred to
Buddhism. Toward the close of the 12th century, Magadha was conquered by the Muslims.
Oh and here is some more information your enlightenment
http://veda.wikidot.com/kingdoms-of-ancient-india