(a) The Allahabad Pillar Inscription: Allahabad Pillar Inscription is one of the most epigraphic evidence of the Imperial Gupta. Achievements of different rulers of the Gupta image are mentioned in Allahabad Pillar Inscription. It gives a vivid description of the reign and conquest of Samudragupta. Historians, both ancient and modem, have considered the historical value of Allahabad Pillar. It provides a pretty impressive lest of Kings and tribal republic that were conquered by Samudragupta. 

(b) Nalanda University: It was the most renowned educational institution of ancient India. Located at Nalanda in Rajagriha in Bihar, it was originally set up by Sakraditya in the 5th century AD during the reign of Kumaragupta-I. The University of Nalanda had imposing buildings. There were at least 8 colleges built by different patrons including one by Balaputradeva, King of Sumatra. According to Hiuen Tsang the whole university area was enclosed by a brick wall. The Nalanda University provided various facilities to the students for their studies. There were three great libraries called Ratnasagar, Ratnodadhi and Ratnaranjak. There were more than 10,000 students including teachers of all kinds. They came from Korea, Mongolia, Japan, China, Tibet, Ceylon and various parts of India. The subjects of study at Nalanda University were all the four Vedas, logic, grammar, medicine, samkya, yoga, nyaya and the Buddhist works of the different schools. It was not an ordinary university. It was a post-graduate institution to which admission was very difficult. Before admission, an examination was held in which hardly 20% students passed and the rest of 80% were rejected. Only the most brilliant were admitted to the University. Nalanda continued to be a beacon of light up to 12th century AD when it was destroyed by Mohammad-bin- Bakhtiyar Khilji, a general of Mohammad Ghori. Today only the remains of its magnificence and glory can be seen.