first to ask whether such powers were given to the head of state because the citizens wanted to give them, or whether they were given for other reasons (for example, because one had a deified ancestor). The latter case led more easily to abuses of power. In Tacitus' opinion, the trend away from a true republic was irreversible only when Tiberius established power, shortly after Augustus' death in 14 CE (much later than most historians place the start of the Imperial form of government in Rome). By this time, too many principles defining some powers as "untouchable" had been implemented. Renaissance republicanism In Europe, republicanism was revived in the late Middle Ages when a number of states, which arose from medieval communes, embraced a republican system of government. These were generally small but wealthy trading states in which the merchant class had risen to prominence. Haakonssen notes that by the Renaissance, Europe was divided, such that those states controlled by a landed elite were monarchies, and those controlled by a commercial elite were republics. The latter included the Italian city-states of Florence, Genoa, and Venice and members of the Hanseatic League. One notable exception was Dithmarschen, a group of largely autonomous villages, which confederated in a peasants' republic. Building upon concepts of medieval feudalism, Renaissance scholars used the ideas of the ancient world to advance their view of an ideal government. Thus the republicanism developed during the Renaissance is known as 'classical republicanism' because it relied on classical models. This terminology was developed by Zera Fink in the 1940s, but some modern scholars, such as Brugger, consider it confuses the "classical republic" with the system of government used in the ancient world. 'Early modern republicanism' has been proposed as an alternative term. It is also sometimes called civic humanism. Beyond simply a non-monarchy, early modern thinkers conceived of an ideal republic, in which mixed government was an important element, and the notion that virtue and the common good were central to good government. Republicanism also developed its own distinct view of liberty. Renaissance authors who spoke highly of republics were rarely critical of monarchies. While Niccolò Machiavelli's Discourses on Livy is the period's key work on republics, he also wrote the treatise The Prince, which is better remembered and more widely read, on how best to run a monarchy. The early modern writers did not see the republican model as