Question: Cirta was repopulated by Romans by the founder of what Roman empire?

full_context: Document 1: Julii Caesares: The Julii Caesares were the most illustrious family of the patrician "gens Julia". The family first appears in history during the Second Punic War, when Sextus Julius Caesar was praetor in Sicily. His son, Sextus Julius Caesar, obtained the consulship in 157 BC; but the most famous descendant of this stirps is Gaius Julius Caesar, a general who conquered Gaul and became the undisputed master of Rome following the Civil War. Having been granted dictatorial power by the Roman Senate and instituting a number of political and social reforms, he was assassinated in 44 BC. After overcoming several rivals, Caesar's adopted son and heir, Gaius Julius Caesar Octavianus, was proclaimed Augustus by the senate, inaugurating what became the Julio-Claudian line of Roman emperors.
Document 2: Marcus Vipsanius Agrippa: Marcus Vipsanius Agrippa ( ; 64/62 BC – 12 BC) was a Roman consul, statesman, general and architect. He was a close friend, son-in-law, and lieutenant to Octavian and was responsible for the construction of some of the most notable buildings in the history of Rome and for important military victories, most notably at the Battle of Actium in 31 BC against the forces of Mark Antony and Cleopatra. As a result of these victories Octavian became the first Roman Emperor, adopting the name of Augustus. Agrippa assisted Augustus in making Rome a city of marble and renovating aqueducts to give all Romans, from every social class, access to the highest quality public services. He was responsible for the creation of many baths, porticoes and gardens, as well as the original Pantheon. Agrippa was also father-in-law to the second Emperor Tiberius, maternal grandfather to Caligula, and maternal great-grandfather to the Emperor Nero.
Document 3: Campaign history of the Roman military: From its origin as a city-state on the peninsula of Italy in the 8th century BC, to its rise as an empire covering much of Southern Europe, Western Europe, Near East and North Africa to its fall in the 5th century AD, the political history of Ancient Rome was closely entwined with its military history. The core of the campaign history of the Roman military is an aggregate of different accounts of the Roman military's land battles, from its initial defense against and subsequent conquest of the city's hilltop neighbors on the Italian peninsula, to the ultimate struggle of the Western Roman Empire for its existence against invading Huns, Vandals and Germanic tribes. These accounts were written by various authors throughout and after the history of the Empire. Following the First Punic War, naval battles were less significant than land battles to the military history of Rome due to its encompassment of lands of the periphery and its unchallenged dominance of the Mediterranean Sea.
Document 4: Battle of Sirte (2011): The Battle of Sirte (also spelled Surt) was the final battle of the Libyan Civil War, beginning when the National Liberation Army attacked the last remnants of the Libyan army still loyal to Muammar Gaddafi in his hometown and designated capital of Sirte, on the Gulf of Sidra. As of September 2011, Sirte and Bani Walid were the last strongholds of Gaddafi loyalists and the NTC hoped that the fall of Sirte would bring the war to an end. The battle and its aftermath marked the final collapse of the four-decade Gaddafi regime. Both Gaddafi and his son, Mutassim, were wounded and captured, and tortured and killed in custody less than an hour later. The month-long battle left Sirte almost completely in ruins, with many buildings damaged or totally destroyed.
Document 5: Augustus (Williams novel): Born Gaius Octavius Thurinus, the young future-emperor was adopted by his great-uncle, Julius Caesar, after demonstrating promising wit and skill. After his great-uncle's assassination, Augustus (at this time known as Gaius Julius Caesar Octavianus) took vengeance upon Caesar's murderers, and through tactical political moves, became one of Rome's three “Triumvirs" alongside Marc Antony and Marcus Aemilius Lepidus. After defeating the other two triumvirs, and obtaining sole power over the Roman State, Augustus (known as "Imperator" Caesar Divi Filius), began taking measures to secure and increase his power. As a result, Augustus gave orders to exterminate Cleopatra's teenaged son, allegedly commenting, "too many Caesars is no good thing." (As it was the common belief that her son was of Julius Caesar's bloodline.) In light of such orders, Cleopatra and Marc Antony—lovers at the time—committed suicide.
Document 6: Cirta: Cirta (from Berber: KRTN or Kirthan, Phoenician: "Tzirta" ) was the capital city of the Berber Kingdom of Numidia in northern Africa (modern Algeria). Its strategically important port city was Russicada. Although Numidia was a key ally of the ancient Roman Republic during the Punic Wars (264–146 BC), Cirta was subject to Roman invasions during the 1st and 2nd centuries BC. Eventually it went under Roman dominion during the rule of Julius Caesar. Cirta was then repopulated by Roman colonists by Caesar and Augustus and was surrounded by a "Confederation of free Roman cities" (Tiddis, Cuicul, Milevum, etc.) The city was destroyed in the beginning of the 4th century and was rebuilt by the Roman emperor Constantine the Great, who gave his name to the newly constructed city, Constantine. Vandals damaged Cirta, but emperor Justinianus I reconquered and improved the Roman city. Arabs finally captured it in 698 AD.
Document 7: Mark Antony: Marcus Antonius (Latin: ; January 14, 83 BC – August 1, 30 BC), commonly known in English as Mark or Marc Antony, was a Roman politician and general who played a critical role in the transformation of the Roman Republic from an oligarchy into the autocratic Roman Empire.
Document 8: Christianity in the 6th century: In 6th century Christianity, Roman Emperor Justinian launched a military campaign in Constantinople to reclaim the western provinces from the Germans, starting with North Africa and proceeding to Italy. Though he was temporarily successful in recapturing much of the western Mediterranean he destroyed the urban centers and permanently ruined the economies in much of the West. Rome and other cities were abandoned. In the coming centuries the Western Church, as virtually the only surviving Roman institution in the West, became the only remaining link to Greek culture and civilization.
Document 9: Augustus: Augustus (Latin: "Imperātor Caesar Dīvī Fīlius Augustus" ; 23 September 63 BC – 19 August 14 AD) was the founder of the Roman Principate and considered the first Roman emperor, controlling the Roman Empire from 27 BC until his death in AD 14. He was born Gaius Octavius into an old and wealthy equestrian branch of the plebeian "gens" Octavia. His maternal great-uncle Julius Caesar was assassinated in 44 BC, and Octavius was named in Caesar's will as his adopted son and heir, then known as Octavianus (Anglicized as Octavian). He, Mark Antony, and Marcus Lepidus formed the Second Triumvirate to defeat the assassins of Caesar. Following their victory at the Battle of Philippi, the Triumvirate divided the Roman Republic among themselves and ruled as military dictators. The Triumvirate was eventually torn apart by the competing ambitions of its members. Lepidus was driven into exile and stripped of his position, and Antony committed suicide following his defeat at the Battle of Actium by Octavian in 31 BC.
Document 10: Reperi: Reperi was an ancient Roman Town of Roman North Africa, in the Roman province of Mauritania Cesariense. The exact location of the ancient town is now unknown, but is surmised to have been in Northern Algeria. The town seems to have last till the Muslim conquest of the Maghreb.
Document 11: Algeria: Algeria (Arabic: الجزائر‎ ‎ "al-Jazā'ir "; Berber: , "Dzayer "; French: "Algérie" ), officially the People's Democratic Republic of Algeria, is a sovereign state in North Africa on the Mediterranean coast. Its capital and most populous city is Algiers, located in the country's far north. With an area of 2381741 km2 , Algeria is the tenth-largest country in the world, and the largest in Africa. Algeria is bordered to the northeast by Tunisia, to the east by Libya, to the west by Morocco, to the southwest by the Western Saharan territory, Mauritania, and Mali, to the southeast by Niger, and to the north by the Mediterranean Sea. The country is a semi-presidential republic consisting of 48 provinces and 1,541 communes (counties). Abdelaziz Bouteflika has been President since 1999.
Document 12: Second Council of Cirta: The Second Council of Cirta was a conference of Bishops, held in June 412, at Cirta in Roman North Africa, and was debated between the Catholic lead by Augustine and the Donatists lead by Silvanus of Numidia. It is notable as the origin of the Catholic Dogma claim that "There is no salvation outside the Catholic Church".
Document 13: History of the Roman Empire: The history of the Roman Empire covers the history of Ancient Rome from the fall of the Roman Republic in 27 BC until the abdication of the last Western emperor in 476 AD. Rome had begun expanding shortly after the founding of the Republic in the 6th century BC, though it did not expand outside of the Italian Peninsula until the 3rd century BC. Civil war engulfed the Roman state in the mid 1st century BC, first between Julius Caesar and Pompey, and finally between Octavian and Mark Antony. Antony was defeated at the Battle of Actium in 31 BC. In 27 BC the Senate and People of Rome made Octavian "imperator" ("commander") thus beginning the Principate, the first epoch of Roman imperial history usually dated from 27 BC to 284 AD; they later awarded him the name Augustus, "the venerated". The success of Augustus in establishing principles of dynastic succession was limited by his outliving a number of talented potential heirs: the Julio-Claudian dynasty lasted for four more emperors—Tiberius, Caligula, Claudius, and Nero—before it yielded in 69 AD to the strife-torn Year of Four Emperors, from which Vespasian emerged as victor. Vespasian became the 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.
Document 14: Gaius Caesar: Gaius Caesar (20BC – 21 February 4AD), formally Gaius Julius Caesar (Latin: "Caius Caesar Augustus filius"), was the adopted son and heir of Augustus. He was born the son of Augustus' trusted friend and general, Marcus Vipsanius Agrippa. His name at birth was Gaius Vipsanius Agrippa, but it later changed to Gaius Julius Caesar, following his adoption out of the "Vipsanii" and into the "Julii" by Augustus. He along with his brother Lucius, born in 17BC, were intended to rule the Roman Empire together.
Document 15: Sicilibba: Sicilibba was an ancient Roman town of the Roman province of proconsular Africa. The ancient town is tentatively identifiable with the ruins at Alaouine (or Alaouenine) in today's Tunisia.
ground_truth: Principate