The Chola Dynasty was a Tamil thalassocratic empire of southern India, one of the longest-ruling dynasties in world history. The earliest datable references to the Chola are in inscriptions from the 3rd century BCE left by Ashoka, of the Maurya Empire. As one of the Three Crowned Kings of Tamilakam, along with the Chera and Pandya, the dynasty continued to govern over varying territory until the 13th century CE. Despite these ancient origins, the period when it is appropriate to speak of a "Chola Empire" only begins with the medieval Cholas in the mid-9th century CE.
The heartland of the Cholas was the fertile valley of the Kaveri River, but they ruled a significantly larger area at the height of their power from the later half of the 9th century till the beginning of the 13th century. The whole country south of the Tungabhadra was united and held as one state for a period of three centuries and more between 907 and 1215 AD.[2] Under Rajaraja I and his successors Rajendra I, Rajadhiraja I, Rajendra II, Virarajendra, and Kulothunga Chola I, the dynasty became a military, economic and cultural powerhouse in South Asia and South-East Asia. The power of the new empire was proclaimed to the eastern world by the expedition to the Ganges which Rajendra Chola I undertook and by naval raids on cities of the city-state of Srivijaya, as well as by the repeated embassies to China.[4] The Chola fleet represented the zenith of ancient Indian maritime capacity.
During the period 1010–1153, the Chola territories stretched from the islands of the Maldives in the south to as far north as the banks of the Godavari River in Andhra Pradesh. Rajaraja Chola conquered peninsular South India, annexed parts of which is now Sri Lanka and occupied the islands of the Maldives. His son Rajendra Chola sent a victorious expedition to North India that touched the river Ganges and defeated the Pala ruler of Pataliputra, Mahipala. In 1025, he also successfully invaded cities of Srivijaya of Malaysia and Indonesia.[5] The Chola invasion ultimately failed to install direct administration over Srivijaya, since the invasion was short and only meant to plunder the wealth of Srivijaya. Chola rule or influence on Srivijava would last until 1070 when the Cholas began to lose almost all of its overseas territories. The Later Cholas (1070-1279) would still rule portions of Southern India. The Chola dynasty went into decline at the beginning of the 13th century with the rise of the Pandyan dynasty, which ultimately caused their downfall.[6]