The battle of Koppam was fought between the Western Chalukyas and the Cholas. This battle is an important event in the history of South India and took place in the 10th century AD.

Background:
- The Western Chalukyas were a powerful dynasty that ruled over the Deccan region of India.
- The Cholas, on the other hand, were a prominent dynasty that ruled over the Tamil region of South India.
- Both dynasties were engaged in a power struggle to establish their dominance over the region.

Reasons for the Battle:
- The Western Chalukyas, under the leadership of King Tailapa II, wanted to expand their kingdom and establish control over the Tamil region.
- The Cholas, led by King Parantaka I, were determined to protect their territory and resist the Chalukyan invasion.

The Battle:
- The battle took place in Koppam, a strategic location in present-day Tamil Nadu.
- The Cholas had a well-trained and disciplined army, while the Chalukyas had a larger force.
- The Chalukyas launched a fierce attack on the Chola army, but the Cholas fought back bravely and managed to hold their ground.
- The battle was intense and lasted for several hours, with both sides suffering heavy casualties.
- In the end, the Cholas emerged victorious and successfully repelled the Chalukyan invasion.

Significance:
- The battle of Koppam was a turning point in the Chalukya-Chola conflict and marked a significant victory for the Cholas.
- The Cholas were able to maintain their sovereignty and prevent the Western Chalukyas from expanding their kingdom further.
- This battle also highlighted the military prowess and strategic capabilities of the Cholas, establishing them as a major power in South India.

In conclusion, the battle of Koppam was fought between the Western Chalukyas and the Cholas, with the Cholas emerging as the victors. This battle played a crucial role in shaping the political landscape of South India and further solidified the Cholas' position as a dominant dynasty in the region.