Pushyamitra Shunga in the context of "List of Mauryan emperors"

The Shunga Empire (IAST: Śuṅga) was a ruling entity centred around Magadha and controlled most of the northern Indian subcontinent from around 187 to 75 BCE. The dynasty was established by Pushyamitra, after taking the throne of Magadha from the Mauryas. The Shunga empire's capital was Pataliputra, but later emperors such as Bhagabhadra also held court at Besnagar (modern Vidisha) in eastern Malwa. This dynasty is also responsible for successfully fighting and resisting the Greeks in Shunga–Greek War.

Pushyamitra ruled for 36 years and was succeeded by his son Agnimitra. There were ten Shunga rulers. However, after the death of Agnimitra, the second king of the dynasty, the empire rapidly disintegrated: inscriptions and coins indicate that much of northern and central India consisted of small kingdoms and city-states that were independent of any Shunga hegemony. The dynasty is noted for its numerous wars with both foreign and indigenous powers. They fought the Kalinga, the Satavahana dynasty, the Indo-Greek kingdom and possibly the Panchalas and Mitras of Mathura.

Brihadratha Maurya was the 9th and the last Emperor of the Mauryan Empire. He ruled from 187 to 185 BCE, when he was overthrown and assassinated by his general, Pushyamitra Shunga, who went on to establish the Shunga Empire. The Mauryan territories, centred on the capital of Pataliputra, had shrunk considerably from the time of Ashoka to when Brihadratha came to the throne.