Mihira Bhoja and the Pratihara Dynasty 

Mihira Bhoja, also known as Bhoja I, was a prominent ruler in the history of India. He is particularly significant for his role in strengthening and expanding his kingdom during a period of considerable political activity. To answer the question "Mihira Bhoja was the ruler of ______", we need to identify the dynasty he belonged to.

Historical records indicate that Mihira Bhoja was a powerful king of the Gurjara-Pratihara dynasty. This dynasty controlled a large part of northern India, including regions like Rajasthan, Madhya Pradesh, Uttar Pradesh, and others, from the 8th to the 11th centuries CE. The Pratiharas were known for their resistance against Arab invasions from Sindh and for participating in the Tripartite Struggle for control over Kannauj, a strategic city in the Ganga valley.

Mihira Bhoja's reign (circa 836-885 CE) was marked by military successes and administrative consolidation. He engaged in conflicts with other major powers of the time, including the Rashtrakutas in the Deccan and the Palas in eastern India, as part of the Tripartite Struggle for Kannauj. His empire reached its zenith during his rule, making the Pratihara dynasty a dominant force in northern India.

Let's consider the given options:

• Rashtrakuta: The Rashtrakuta dynasty was a powerful ruling house in the Deccan region during the same period as the Pratiharas and Palas. They were rivals of the Pratiharas, not the dynasty Mihira Bhoja belonged to.
• Chola: The Chola dynasty was a prominent power in South India, particularly known for its naval strength and temple building. Their main period of expansion was later than Mihira Bhoja's reign.
• Chalukya: The Chalukya dynasty ruled parts of South and Central India at various times. While they were significant, Mihira Bhoja was not a ruler of any of the Chalukya branches.
• Pratihara: As discussed, Mihira Bhoja was indeed a famous and powerful ruler of the Gurjara-Pratihara dynasty, centered in northern India.

Therefore, based on historical information, Mihira Bhoja was a ruler of the Pratihara dynasty.

Revision Table: Key Indian Dynasties Mentioned

Additional Information: The Tripartite Struggle

Mihira Bhoja's reign is closely linked to the Tripartite Struggle, a long-drawn-out conflict between three major powers of the 8th to 10th centuries CE for control over the city of Kannauj. Kannauj was strategically located in the fertile Ganga-Yamuna Doab and symbolized political power and prestige in northern India.

The three dynasties involved in the Tripartite Struggle were:

• The Gurjara-Pratiharas from Western/Northern India.
• The Palas from Eastern India (Bengal).
• The Rashtrakutas from the Deccan.

Each dynasty launched repeated expeditions to capture and hold Kannauj. While all three had periods of success, the Pratiharas eventually established their dominance over Kannauj for a significant period, particularly under rulers like Mihira Bhoja and his successor Mahendrapala I. This struggle significantly impacted the political landscape of early medieval India.