Analysis of information sources in references of the Wikipedia article "Chakravarti (Sanskrit term)" in English language version.
By the age of the Mauryan kings there had evolved the concept of chakravartin (literally—he who turns the wheel of power)—the single ruler, whose power stretched, as it were, over enormous territories from the Western to the Eastern Ocean, from the Himalayas to the south seas.
The ultimate aim was a 'world ruler (chakravarti); who would control the whole Indian subcontinent (KA 9.1.17-21)—as Ashoka did.
One hundred years after my death, this boy will become a Chakravarti king at Pataliputra who will rule over all regions. His name will be Ashoka, and he will rule through the true Dharma. In addition, he will distribute my relics abroad, will build eighty-four thousand stupas.