Samatata Kingdom
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After the decline of the Mauryan Empire, the eastern part of Bengal became the state of Samatata.
Establishment
January 199 BC: Soon after the death of emperor Ashoka, the Mauryan Empire declined and the eastern part of Bengal became the state of Samatata.
Chronology
Interactive Chronologies with maps are available in the section Changes Navigation
Conquests by Gupta ruler Samudragupta.
January 351: The Allahabad Pillar inscription mentions that rulers of several frontier kingdoms and tribal oligarchies paid Samudragupta tributes, obeyed his orders, and performed obeisance before him. The frontier kingdoms included Samatata, Davaka, Kamarupa, Nepala, and Karttripura. The tribal oligarchies included Malavas, Arjunayanas, Yaudheyas, Madrakas, and Abhiras, among others.
Disestablishment
January 351: The Gauḍa Kingdom (Gāuṛ Rājya), was a Hindu regional power during the Classical period on the Indian subcontinent. It originated in the region of Bengal (modern-day West Bengal and Bangladesh) in 4th century CE or possibly earlier.
January 351: The Allahabad Pillar inscription mentions that rulers of several frontier kingdoms and tribal oligarchies paid Samudragupta tributes, obeyed his orders, and performed obeisance before him. The frontier kingdoms included Samatata, Davaka, Kamarupa, Nepala, and Karttripura. The tribal oligarchies included Malavas, Arjunayanas, Yaudheyas, Madrakas, and Abhiras, among others.