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Answer:
Indian astronomy was influenced by Greek astronomy beginning in the 4th century BCE and through the early centuries of the Common Era, for example by the Yavanajataka and the Romaka Siddhanta, a Sanskrit translation of a Greek text disseminated from the 2nd century.
Explanation:
A primary source gives us first-hand information. it states the automatic facts, and not what has been heard through a second-hand information (sencondary source). it provides information like: direct or firsthand evidence about an event, object, person, or work of art.
and examples are: eyewitness accounts, results of experiments, and statistical data