The Chola dynasty (200—1279) reached the peak of its influence and power during the medieval period. Emperors Rajaraja Chola I (reigned 985–1014) and Rajendra Chola I (reigned 1012–1044) extended the Chola kingdom beyond the traditional limits. At its peak, the Chola Empire stretched from the island of Sri Lanka in the south to the Godavari basin in the north. The kingdoms along the east coast of India up to the river Ganges acknowledged Chola suzerainty. Chola navies invaded and conquered Srivijaya and Srivijaya was the largest empire in Maritime Southeast Asia. Goods and ideas from India began to play a major role in the "Indianization" of the wider world from this period. The Cholas excelled in foreign trade and maritime activity, extending their influence overseas to China and Southeast Asia. Towards the end of the 9th century, southern India had developed extensive maritime and commercial activity. The Cholas, being in possession of parts of both the west and the east coasts of peninsular India, were at the forefront of these ventures. The Tang dynasty (618–907) of China, the Srivijaya empire in Maritime Southeast Asia under the Sailendras, and the Abbasid caliphate at Baghdad were the main trading partners.