I want to know the answer to the following question:
In what area did the Chola Empire establish political unity?
All the background I'm provided with is that "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 the occupation of cities of the maritime empire of Srivijaya in Southeast Asia, as well as by the repeated embassies to China.". Is that enough to answer the question?