What caused Asoka's edicts to become o focus of study in the past 150 years?

Asoka's edicts have become a focus of study in the past 150 years due to their historical significance and the insights they provide into early Indian civilization, governance, and Buddhism. These inscriptions, which promote principles of non-violence, ethical governance, and religious tolerance, reflect Asoka's efforts to unify a diverse empire. Additionally, the discovery and deciphering of the edicts in various languages have sparked interest among historians, archaeologists, and scholars, further illuminating the cultural and philosophical landscape of the time. Their relevance to contemporary discussions on ethics and governance also contributes to their enduring interest.