In his 34 - year reign he has suppressed monasticism and image worship , restored aqueducts , revived commerce , and repopulated Constantinople .
September 14 -- Emperor Constantine V dies while on a campaign in Bulgaria .
In Constantine V 's 34 - year reign Constantine V has suppressed monasticism and image worship , restored aqueducts , revived commerce , and repopulated Constantinople .
September 14 -- Emperor Constantine V dies while on a campaign in Bulgaria .