When did the age of the Martyrdom end?

The age of martyrdom is often considered to have ended around the 4th century AD, particularly with the Edict of Milan in 313 AD, which granted religious tolerance in the Roman Empire. This shift marked a significant change in the status of Christianity, transitioning from a persecuted faith to an accepted and eventually state-sanctioned religion. Consequently, the frequency of martyrdom decreased as Christians gained legal protection and societal acceptance.