ROME: What does 'SPQR' mean?
SPQR is an initialism from a Latin phrase, Senatus Populusque Romanus - The Senate and People of Rome, referring to the government of the ancient Roman Republic, and used as an official emblem of the modern day comune (municipality) of Rome. It appears on coins, at the end of documents made public by inscription in stone or metal, in dedications of monuments and public works, and was emblazoned on the standards of the Roman legions. The phrase appears many hundreds of times in Roman political, legal and historical literature, including the speeches of Marcus Tullius Cicero and the history of Titus Livius. Since the meaning and the words never vary, except for the spelling and inflection of populus in literature, Latin dictionaries classify it as a formula.
The phrase's date of origin is not known, but its meaning places it generally after the founding of the Roman Republic. The two legal entities mentioned, Senatus and the Populus Romanus, are sovereign when combined.
However, where populus is sovereign alone, Senatus is not. Under the Roman Monarchy neither entity was sovereign. The phrase, therefore, can be dated to no earlier than the foundation of the Republic.
This signature continued in use under the Roman Empire. The emperors were considered the representatives of the people even though the senatus consulta, or decrees of the Senate, were made at the pleasure of the emperor.
Populus Romanus in Roman literature is a phrase meaning the government of the People. When the Romans named governments of other countries they used populous in the singular or plural, such as populi Prix Corum Latinorum, "the governments of the Old Latins". Romanus is the established adjective used to distinguish the Romans, as in civis Romanus, "Roman citizen". The locative, Romae, "at Rome", was never used for that purpose.
The Roman people appear very often in law and history in such phrases as dignitas, maiestas, auctoritas, libertad populi Romani, the "dignity, majesty, authority, freedom of the Roman people." They were a populus liber, "a free people." There was an exercitus, imperium, iudicia, honores, consoles, voluntas of this same populus: "the army, rule, judgments, offices, consuls and will of the Roman people". They appear in early Latin as Populous and Populus, so the habit of thinking of themselves as free and sovereign was quite ingrained.
The Romans believed that all authority came from the people. It could be said that similar language seen in more modern political and social revolutions directly comes from this usage.
People in this sense meant the whole government. The latter, however, was essentially divided into the aristocratic Senate, whose will was executed by the consuls and praetors, and the comitia centuriata, "committee of the centuries", whose will came to be safeguarded by the Tribunes.
During the regime of Benito Mussolini, SPQR was emblazoned on a number of public buildings and manhole covers in an attempt to promote his dictatorship as a "New Roman Empire".
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WHAT DOES SPQR STAND FOR