Latin rights
All the "Latini" of Italy obtained Roman citizenship as a result of three laws which were introduced during the Social War between the Romans and their allies among the Italic peoples ("socii") which rebelled against Rome. The "Lex Iulia de Civitate Latinis (et sociis) Danda" of 90 BC conferred Roman citizenship on all citizens of the Latin towns and the Italic towns who had not rebelled. The "Lex Plautia Papiria de Civitate Sociis Danda" of 89 BC granted Roman citizenship to all federated towns in Italy south of the River Po (in northern Italy). The "Lex Pompeia de  Transpadanis" of 89 BC granted the "ius Latii" to the communities of Transpadania, a region north of the Po, which had sided with Rome during the Social War. It also granted Roman citizenship to those who became officials in their respective "municipia" (cities). The exact content of the "ius Latii", under Roman law, varied from city to city. It could include some or all of the following rights: Outside of Italy, the term "Latinitas" continued to be used for other cases. Cicero used this term in relation to Julius Caesar's grant of Latin rights to the Sicilians in 44  BC. This use of ""ius Latii"" or ""Latinitas"" persisted to the reign of Emperor Justinian I in the sixth century AD. This status was later given to whole towns and regions: Emperor Vespasian granted it to the whole of Hispania and Emperor Hadrian gave it to many towns. Origin. Rome was one of the many Latin cities of Italy. From 340 to 338 BC the Latin League, a confederation of circa 30 towns in Latium (land of the Latins) which was allied with Rome, rebelled in what has been called the Latin War. The Romans won the war and dissolved  the Latin League. Many of the city-states of Latium were fully incorporated into the Roman Republic, while others were given limited rights and privileges which could be exercised in dealings with Roman citizens. These came to be known as "ius Latii". The "ius Latii" was given to some Roman colonies which were founded around Italy in the fourth and third centuries BC to strengthen Roman control, as Rome expanded its hegemony over the peninsula. They were colonies which were given Latin legal status, and their settlers the "ius Latii", instead of the Roman legal status of other colonies whose  settlers kept Roman citizenship. Colonies of Latin status were called "Latin colonies" and those of Roman status were called "Roman colonies". Roman citizens who settled in a Latin colony lost their Roman citizenship and acquired "ius Latii". Latin colonies were usually larger than Roman colonies and were populated largely by Latins and other allies. With Roman expansion beyond Italy, Latin colonies were also founded outside Italy, e. g. Carteia (contemporary San Roque), which was founded in Hispania in 171 BC and was the first Latin colony outside of Italy. In 122 BC, the plebeian tribune Gaius Gracchus introduced a law  which extended the "ius Latii" to all other residents of Italy. This reflected the increasing ties between Rome and the Italic peoples through trade and the ties between the leading families in the Italian towns and patrician families in Rome. In 44 BC, Julius Caesar granted the "ius Latii" to all free-born Sicilians. Under the Empire. Following the great spate of colonial settlements under Julius Caesar and Augustus, the "ius Latii" was used more as a political instrument that aimed at integration of provincial communities via their local leadership. Latin status included the acquisition of Roman citizenship upon the  holding of municipal magistracy ("ius adipiscendae civitatis per magistratum"), which presumed a trajectory of development that would carry at least the local magistrates along the path to the institution of a Roman-style community. In AD 123, Emperor Hadrian made a key modification to Latin rights. He introduced ""Latium maius"" ("greater Latin [rights]"), which conferred Roman citizenship on all the decurions of a town as opposed to ""Latium minus"", which conferred it only on those who held a magistracy. The acquisition of "ius Latii" was wholly dependent on imperial gift. This beneficence could span the whole range from grants to  individuals to awards made to whole towns, and could even be applied to an entire population, as when Emperor Vespasian gave the "ius Latii" to all of Hispania in AD 74. Although this decree could encompass whole cities, it is important to note that it did not necessarily entail the establishment of a municipium (self-governing town). Often, as in Hispania, formal "municipia" might have been constituted several years after the initial grant.