History of the Roman Empire founder of the brief Flavian dynasty, to be followed by the Nerva–Antonine dynasty which produced the "Five Good Emperors": Nerva, Trajan, Hadrian, Antoninus Pius and the philosophically inclined Marcus Aurelius. In the view of the Greek historian Dio Cassius, a contemporary observer, the accession of the emperor Commodus in 180 AD marked the descent "from a kingdom of gold to one of rust and iron"—a famous comment which has led some historians, notably Edward Gibbon, to take Commodus' reign as the beginning of the decline of the Roman Empire. In 212, during the reign of Caracalla, Roman citizenship was granted
Historiography of the fall of the Ottoman Empire Historiography of the fall of the Ottoman Empire Many twentieth-century scholars argued that power of the Ottoman Empire began waning after the death of Suleiman the Magnificent in 1566, and without the acquisition of significant new wealth the empire went into decline, a concept known as the Ottoman Decline Thesis. Since the late 1970's, however, historians increasingly came to question the idea of Ottoman decline, and now there is a consensus among academic historians that the Ottoman Empire did not decline. Itzkowitz and İnalcik state Ottoman writers attributed the Empire’s troubles to the dissolution of the circle of equity, erosion