Finer's magnum opus, "The History of Government from the Earliest Times", is a comparative analysis of government systems, past and present. Polities covered include the Sumerian city states, the kingdom of Ancient Egypt, the Assyrian Empire, the kingdoms of Israel and Judah, the Persian Empire, the Classical Greek city republics, the republic and empire of Rome, the Chinese Empire under the Han, the Tang, the Ming and the Qing, the Byzantine Empire, the Arab Caliphate, Mamluk Egypt, the European feudal kingdoms (including the emergence of representative assemblies), the Italian Mediaeval/Renaissance city republics (e.g. Florence and Venice), Tokugawa Japan, the Ottoman Empire, the Mughal Empire, and the modern state as it emerged in Europe, including themes of absolute versus parliamentary monarchy, the transplantation of European state models overseas, the Age of Enlightenment, the American and French revolutions, the constitutionalisation of the European monarchies, and industrialisation.