India, Greece, and Rome share a common history, as Hinduism is the closest thing we have to a continuation of the Greco-Roman religion (syncretized with the indigenous religions over many years). This is seen in the resemblance between the Greek and Roman Gods and the lesser known Indian ones. For example, the Rigvedic god Dyaus-pita is a direct relation to Jupiter. The names of the days in Sanskrit correspond to the same gods the latin names are after (and also the german ones, but they become harder to suss out).