[8] It was said that Romulus and his twin brother Remus were the offspring of the rape of an Alban princess by the war god Mars and, via their mother, were further descended from the Trojan prince Aeneas, supposed son of the Greek love goddess Aphrodite.
Avenging themselves on their usurping grand-uncle and restoring their grandfather Numitor to Alba Longa's throne, they were ordered or decided to settle the hills around Rome's later Forum Boarium, an important river port connected in Roman myth with Hercules's tenth labour, capturing the cattle of Geryon.
[15] The Greeks had founded many colonies in Southern Italy between 750 and 550 BC (which the Romans later called Magna Graecia), such as Cumae, Naples, Reggio Calabria, Crotone, Sybaris, and Taranto, as well as in the eastern two-thirds of Sicily.
It also abandoned monarchy in favour of a republican system based on a Senate, composed of the nobles of the city, along with popular assemblies which ensured political participation for most of the freeborn men and elected magistrates annually.
[21] The commonly held stories of the early part of the Republic (before roughly 300 BC, when Old Latin inscriptions and Greek histories about Rome provide more concrete evidence of events) are generally considered to be legendary, their historicity being a topic of debate among classicists.
Beginning in the 2nd century BC, Rome went through a significant population expansion as Italian farmers, driven from their ancestral farmlands by the advent of massive, slave-operated farms called latifundia, flocked to the city in great numbers.
In the following years, Rome continued its conquests in Spain with Tiberius Gracchus, and it set foot in Asia, when the last king of Pergamum gave his kingdom to the Roman people.
The new feeling of danger and the menace of barbarian invasions was clearly shown by the decision of Emperor Aurelian, who at year 273 finished encircling the capital itself with a massive wall which had a perimeter that measured close to 20 km (12 mi).
In capturing the regions of Benevento, Lombardy, Piedmont, Spoleto and Tuscany, the invaders effectively restricted Imperial authority to small islands of land surrounding a number of coastal cities, including Ravenna, Naples, Rome and the area of the future Venice.
"[59] This was followed by a plague in 590, which was notable for the legend of the angel seen, while the newly elected Pope Gregory I (term 590–604) was passing in procession by Hadrian's Tomb, to hover over the building and to sheathe his flaming sword as a sign that the pestilence was about to cease.
With the Emperor preoccupied with wars in the eastern borders and the various succeeding Exarchs unable to secure Rome from invasion, Gregory took personal initiative in starting negotiations for a peace treaty.
At the same time the universal church of Rome had to face emergence of the lay interests of the City itself, spurred on by the conviction that the Roman people, though impoverished and abased, had again the right to elect the Western Emperor.
Inspired by neighbouring cities like Tivoli and Viterbo, Rome's people began to consider adopting a communal status and gaining a substantial amount of freedom from papal authority.
Through the inflammatory words of preacher Arnaldo da Brescia, an idealistic, fierce opponent of ecclesiastical property and church interference in temporal affairs, the revolt that led to the creation of the Commune of Rome continued until it was put down in 1155, though it left its mark on the civil government of the Eternal City for centuries.
The endless struggles between noble families (Savelli, Orsini, Colonna, Annibaldi), the ambiguous position of the Popes, the haughtiness of a population which never abandoned the dreams of their splendid past but, at the same time, thought only of immediate advantage, and the weakness of the republican institutions always deprived the city of this possibility.
In order to bring peace in the city he suppressed the most powerful nobles (destroying some 140 towers), reorganised the working classes and issued a code of laws inspired by those of northern Italy.
In August 1354, Cola was again a protagonist, when Cardinal Gil Alvarez De Albornoz entrusted him with the role of "senator of Rome" in his programme of reassuring the Pope's rule in the Papal States.
The countryside party hired a condottieri band called "Del Cappello" ("Hat"), while the Romans bought the services of German and Hungarian troops, plus a citizen levy of 600 knights and even 22,000 infantry.
There followed four decades of instability, characterised by the local power struggle between the commune and the papacy, and internationally by the great Western Schism, at the end of which was elected Pope, Martin V. He restored order, laying the foundations of its rebirth.
The personal politics of intrigue and war required much money, but in spite of this Sixtus was a true patron of art in the manner of Nicholas V. He reopened the academy and reorganised the Collegio degli Abbreviatori, and in 1471 began the construction of the Vatican Library, whose first curator was Platina.
Rome was safe and, as the King directed himself southwards, the Pope again changed his position, joining the anti-French League of the Italian States which finally compelled Charles to flee to France.
Rome lost in part its religious character, becoming increasingly a true Renaissance city, with a great number of popular feasts, horse races, parties, intrigues and licentious episodes.
[81] The need for renovation in the religious customs became evident in the vacancy period after Paulus' death, when the streets of Rome became seat of masked carousels which satirised the Cardinals attending the conclave.
During this period Michelangelo opened the Porta Pia and turned the Baths of Diocletian into the spectacular basilica of Santa Maria degli Angeli e dei Martiri, where Pius IV was buried.
The French writer and philosopher Montaigne maintained that "life and goods were never as unsure as at the time of Gregorius XIII, perhaps", and that a confraternity even held same-sex marriage in the church of San Giovanni a Porta Latina.
With French units still stationed at Rome however, Cavour, being called back to office, foresaw a possibility of Garibaldi attacking the Papal States and accidentally disrupting French-Italian relations.
[91] Soon after World War I, Rome witnessed the rise to power of Italian Fascism guided by Benito Mussolini, who, at the request of King Victor Emmanuel III, marched on the city in 1922, eventually declaring a new Empire and allying Italy with Nazi Germany.
The Lateran Treaty was signed by Benito Mussolini on behalf of King Victor Emmanuel III and by Cardinal Secretary of State Pietro Gasparri for Pope Pius XI.
During World War II, Rome suffered few bombings (notably at San Lorenzo) and relatively little damage because none of the nations involved wanted to endanger the life of Pope Pius XII in Vatican City.
So great was the influx of people that on the coast, there was restructuring of Ostia and the inclusion of bordering villages such as Labaro, Osteria del Curato, Quarto Miglio, Capannelle, Pisana, Torrevecchia, Ottavia, Casalotti.