Parties involved in the Tripartite Struggle:
The tripartite struggle was a series of battles for control over northern India among three powerful dynasties during the 9th and 10th centuries. The main parties involved were the Pratiharas, the Palas, and the Rashtrakutas.

Pratiharas:
The Pratiharas were a powerful Rajput dynasty that ruled over a large part of northern India. Their capital was located at Kannauj, and they were known for their military prowess and strong administrative skills. The Pratiharas were staunch supporters of Hinduism and played a key role in resisting the Arab invasions in India. They were led by rulers such as Bhoja and Mahendrapala I.

Palas:
The Palas were a dynasty that ruled over Bengal and Bihar in eastern India. They were known for their support of Buddhism and for their patronage of learning and the arts. The Palas were great builders and their rule saw the construction of many magnificent temples and monasteries. They were led by rulers such as Dharmapala and Devapala.

Rashtrakutas:
The Rashtrakutas were a powerful dynasty that ruled over parts of western and southern India. They were known for their military conquests and their patronage of art and architecture. The Rashtrakutas were led by rulers such as Dantidurga and Krishna I. They were particularly known for their conflict with the Pratiharas over control of Kannauj.

Summary:
The tripartite struggle was a complex series of battles and shifting alliances among these three powerful dynasties for control over northern India. The struggle ultimately weakened all three dynasties and paved the way for the rise of other regional powers in India.