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. The grandson of the founder of the Maurya Dynasty, 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 (in Magadha, present-day Patna), with provincial capitals at Taxila and Ujjain.Ashoka waged a destructive war against the state of Kalinga (modern Odisha),...