The Chola Empire, which is often referred to as the Imperial Cholas, was a medieval Indian, thalassocratic empire that was established by the Chola dynasty that rose to prominence during the middle of the ninth century and united southern India under their rule.

Medieval India refers to a long period of post-classical history of the Indian subcontinent between the "ancient period" and "modern period". It is usually regarded as running approximately from the breakup of the Gupta Empire in the 6th century CE to the start of the early modern period in 1526 with the start of the Mughal Empire, although some historians regard it as both starting and finishing later than these points. The medieval period is itself subdivided into the early medieval and late medieval eras.