Explanation: Allahabad Prashasti:

• It is also known as Prayag Prashasti.
• It is a pillar inscription of Samudragupta found at Allahabad and written in Sanskrit.
• It was composed by Harisena.
• It is one of the important epigraphic sources to know about the political history of the Guptas.
• There are thirty-three lines in total.
• Line 22 of the inscription especially describes the conquests of Samudragupta over the frontier states.
• Lines 13-15 of the inscription refer to the conquests of Samudragupta in his first Aryavarta war in which he defeated three important rulers namely, Achyuta, Nagasena, and Ganapatinaga of the Naga Dynasty.
• Lines 19-20 described his South India Campaign.
• Line 23 refers to Samudragupta violently exterminating a number of kings of Aryavarta.

Source: UPSC NDA