- Rajendra Chola I expanded the Chola empire significantly both northwards and overseas. - He earned the title 'Gangaikonda Cholan' and built a new capital, Gangaikonda Cholapuram. - He undertook successful naval expeditions to Sri Lanka, Maldives, and Southeast Asia. - The Brihadishvara Temple at Thanjavur was built by his father, Rajaraja Chola I.