King Kharvela was the greatest ruler of the Chedi Dynasty of Kalinga.

King Kharvela's Reign and Achievements
King Kharvela ruled over the Chedi Dynasty of Kalinga during the 1st century BCE. He is regarded as one of the greatest rulers of the dynasty due to his significant achievements and contributions.

1. Military Exploits
- King Kharvela was a skilled military strategist and led several successful military campaigns. He expanded the territory of the Chedi Dynasty through conquests and annexations.
- He defeated the Satavahanas, a powerful dynasty in South India, and established his dominance in the region. This victory further strengthened his kingdom.

2. Restoration of Kalinga
- King Kharvela is best known for his efforts in restoring the glory of Kalinga after it was devastated during the Mauryan Emperor Ashoka's invasion in 261 BCE.
- He rebuilt and renovated many temples, stupas, and other structures that were destroyed during the war. He also sponsored the construction of new monuments, showcasing his patronage of art and architecture.

3. Economic Development
- King Kharvela focused on the economic prosperity of his kingdom. He encouraged trade and commerce, which led to the growth of Kalinga's economy.
- He built roads and improved infrastructure, facilitating smoother transportation and trade activities. This boosted the prosperity of the region and increased its influence.

4. Cultural Patronage
- King Kharvela was a patron of art, literature, and culture. He supported scholars, artists, and poets, encouraging the development of Kalinga's rich cultural heritage.
- He sponsored the translation of various religious texts into the local language and supported the growth of Buddhism and Jainism in the region.

Conclusion
King Kharvela's reign was marked by his military achievements, restoration of Kalinga, economic development, and cultural patronage. His contributions played a crucial role in shaping the history and legacy of the Chedi Dynasty of Kalinga. Therefore, it is justified to consider him as the greatest ruler of the dynasty.