Rajaraja Chola, also known as Rajaraja the Great, was one of the most prominent rulers of the Chola dynasty in southern India. He reigned from 985 to 1014 CE and made several significant contributions to the history and development of the Chola Empire. Among these contributions, the most important one was the introduction of the tradition of beginning the Chola epigraphs with historical introductions.

Historical Introductions:
Rajaraja Chola introduced the practice of including historical introductions in the Chola inscriptions. These inscriptions were usually carved on temple walls and copper plates, providing important historical information about the Chola dynasty. The historical introductions mentioned the lineage of the Chola rulers and their achievements, thereby establishing a connection with the past and asserting their legitimacy as rulers. This practice of historical introductions was followed by subsequent Chola kings and became a significant feature of Chola inscriptions.

Importance of Historical Introductions:
The historical introductions introduced by Rajaraja Chola had several implications and significances:

1. Legitimization of Rule: By including historical introductions, Rajaraja Chola aimed to establish the legitimacy of his rule and that of the Chola dynasty. These introductions traced the lineage of the Chola rulers back to their ancient ancestors, thereby emphasizing their rightful claim to the throne.

2. Historical Documentation: The historical introductions served as important historical records, documenting the achievements and contributions of the Chola rulers. They provided valuable information about the rulers, their conquests, patronage of art and architecture, and their contributions to society and governance.

3. Cultural Pride: The historical introductions also fostered a sense of cultural pride among the Chola rulers and their subjects. By highlighting their glorious past, they instilled a sense of pride and nationalism, reinforcing the cultural identity of the Chola Empire.

4. Propagation of Dynasty's Legacy: The inclusion of historical introductions in the Chola inscriptions ensured the propagation of the dynasty's legacy. These inscriptions were widely distributed and displayed in prominent places such as temples, ensuring that future generations would be aware of and appreciate the achievements of their ancestors.

In conclusion, the great historical contribution of Rajaraja Chola was the introduction of the tradition of beginning the Chola epigraphs with historical introductions. This practice not only legitimized the rule of the Chola dynasty but also served as a means of historical documentation, cultural pride, and the propagation of the dynasty's legacy.