Explanation:

• Ashoka abandoned the policy of physical possession in favor of cultural conquest, that policy has been named Bherighosa and Dhammaghosa.
• He replaced the policy of Bherighosha with Dhammaghosha.
• Bherighosha, the literal meaning is “the sound of war drums.
• Dhammaghosha means “the sound of peace signifying conquest through dhamma” instead of through war.
• Major Rock Edict XIII speaks about this change of policy in the Ashokan realm.
• Ashoka inscribed in the fourth great rock edict that due to his dhammaniti, religious discipline has increased. What was earlier Bherighosh has now turned into Dhammaghosh.

Source: ICSE Total History