Magadha
Dynasties and rulers

The history of Magadha region is very vast, it can be divided into many periods as:

There is much uncertainty about the succession of kings and the precise chronology of Magadha prior to Mahapadma Nanda; the accounts of various ancient texts (all of which were written many centuries later than the era in question) contradict each other on many points.

Two notable rulers of Magadha were Bimbisara (also known as Shrenika) and his son Ajatashatru (also known as Kunika), who are mentioned in Buddhist and Jain literature as contemporaries of the Buddha and Mahavira. Later, the throne of Magadha was usurped by Mahapadma Nanda, the founder of the Nanda Dynasty (c. 345 – c. 322 BCE), which conquered much of north India. The Nanda dynasty was overthrown by Chandragupta Maurya, the founder of the Maurya Empire (c. 322 –185 BCE).

Furthermore, there is a "Long Chronology" and a contrasting "Short Chronology" preferred by some scholars, an issue that is inextricably linked to the uncertain chronology of the Buddha and Mahavira. According to historian K. T. S. Sarao, a proponent of the Short Chronology wherein the Buddha's lifespan was c.477–397 BCE, it can be estimated that Bimbisara was reigning c.457–405 BCE, and Ajatashatru was reigning c.405–373 BCE. According to historian John Keay, a proponent of the "Long Chronology," Bimbisara must have been reigning in the late 5th century BCE, and Ajatashatru in the early 4th century BCE. Keay states that there is great uncertainty about the royal succession after Ajatashatru's death, probably because there was a period of "court intrigues and murders," during which "evidently the throne changed hands frequently, perhaps with more than one incumbent claiming to occupy it at the same time" until Mahapadma Nanda was able to secure the throne.
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