the Kingdoms of Ancient India as described in Sanskrit literature

Gupta Empire

The ancient History of India, which generally includes the ancient history of the whole Indian subcontinent (South Asia)

Indus Valley Civilization — during the Bronze Age

Vedic period — the period of Vedic Sanskrit, spanning the late Bronze Age and the earlier Iron Age

Mahajanapadas — during the later Iron Age

Magadha Empire — during classical antiquity (6th to 4th centuries BC)

Maurya Empire — the largest ancient Indian empire, contemporary to Hellenism in the west (4th to 2nd centuries BC), golden age of early Classical Sanskrit literature

Middle kingdoms of India — during late antiquity and the early Middle Ages

Indo-Greek kingdoms and Kushan Empire (2nd c. BC to 3rd c. AD)