Complex sentence: The earliest archaeological evidence for the presence of Buddhist stupas dates to the late 4th century BCE in India, Sanchi, Sarnath, Amaravati and Bharhut are one of the oldest known stupas.
Split into simpler sentences: The earliest archaeological evidence for the presence of Buddhist stupas dates to the late 4th century BCE. In India, Sanchi, Sarnath, Amaravati and Bharhut are among the oldest known stupas.