The democratic form of government declined during the Hellenistic and Roman eras, only to be revived as an curiosity in Western Europe in the course of the early trendy period. Another highly recognizable and in style Greek image is the double-headed eagle, the imperial emblem of the final dynasty of the Eastern Roman Empire and a standard image in Asia Minor and, later, Eastern Europe. It is not a part of the trendy Greek flag or coat-of-arms, although it is officially the insignia of the Greek Army and the flag of the Church of Greece. It had been included in the Greek coat of arms between 1925 and 1926.