Ashoka, also known as Ashoka the Great, was an Indian emperor of the Maurya Dynasty, who ruled almost all of the Indian subcontinent from c. 268 to 232 BCE. A grandson of the Maurya dynasty's founder Chandragupta Maurya, Ashoka promoted the spread of Buddhism across ancient Asia. Considered by many to be one of India's greatest emperors, Ashoka expanded Chandragupta's empire to reign over a realm stretching from present-day Afghanistan in the west to Bangladesh in the east. It covered the entire Indian subcontinent except for parts of present-day Tamil Nadu, Karnataka, and Kerala. The empire's capital was Pataliputra, with provincial capitals at Taxila and Ujjain.
Ashoka waged a destructive war against the state of Kalinga, which he conquered in about 260 BCE. According to an interpretation of his Edicts, he converted to Buddhism after witnessing the mass deaths of the Kalinga War, which he had waged out of a desire for conquest and which reportedly directly resulted in more than 100,000 deaths and 150,000 deportations.