Information: - Brihadratha Maurya was the last ruler of the Maurya Empire. He ruled from . He was killed by his general, Pushyamitra Shunga, who went on to establish the Shunga Empire. - The Maurya Empire was a geographically extensive Iron Age historical power founded by Chandragupta Maurya which dominated ancient India between and 185 BCE. Originating from the kingdom of Magadha in the Indo-Gangetic Plain in the eastern side of the Indian subcontinent, the empire had its capital city at Pataliputra (modern Patna). The empire was the largest to have ever existed in the Indian subcontinent, spanning over 5 million square kilometres at its zenith under Ashoka. - Devavarman (or Devadharman) was a king of the Maurya Empire. He ruled in the period 202195 BCE. According to the Puranas, he was the successor of Shalishuka Maurya and reigned for seven years. He was succeeded by Shatadhanvan. - Shatadhanvan ( IAST : atadhanvan ) or Shatadhanus was a king of the Maurya dynasty . He ruled from 195 -- 187 BCE . According to the Puranas , he was the successor of Devavarman Maurya and reigned for eight years . During his time , the empire lost some of its territories because of invasions . He was succeeded by Brihadratha Maurya . - The Shunga Empire (IAST: "") was an ancient Indian dynasty from Magadha that controlled vast areas of the Indian subcontinent from around 187 to 78 BCE. The dynasty was established by Pushyamitra Shunga, after the fall of the Maurya Empire. Its capital was Pataliputra, but later emperors such as Bhagabhadra also held court at Besnagar (modern Vidisha) in eastern Malwa. Given the information, choose the subject and object entities that have the relation of 'head of state'.
shatadhanvan , maurya empire