Trajan
Overview
 
Trajan was Roman Emperor
Roman Emperor
The Roman emperor was the ruler of the Roman State during the imperial period . The Romans had no single term for the office although at any given time, a given title was associated with the emperor...

 from 98 to 117 AD. Born into a non-patrician family in the province of Hispania Baetica
Hispania Baetica
Hispania Baetica was one of three Imperial Roman provinces in Hispania, . Hispania Baetica was bordered to the west by Lusitania, and to the northeast by Hispania Tarraconensis. Baetica was part of Al-Andalus under the Moors in the 8th century and approximately corresponds to modern Andalucia...

, in Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

 Trajan rose to prominence during the reign of emperor Domitian
Domitian
Domitian was Roman Emperor from 81 to 96. Domitian was the third and last emperor of the Flavian dynasty.Domitian's youth and early career were largely spent in the shadow of his brother Titus, who gained military renown during the First Jewish-Roman War...

. Serving as a legatus legionis
Legatus legionis
Legatus legionis was a title awarded to legion commanders in Ancient Rome.-History:By the time of the Roman Republic, the term legatus delegated authority...

 in Hispania Tarraconensis
Hispania Tarraconensis
Hispania Tarraconensis was one of three Roman provinces in Hispania. It encompassed much of the Mediterranean coast of Spain along with the central plateau. Southern Spain, the region now called Andalusia, was the province of Hispania Baetica...

, in Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

, in 89 Trajan supported the emperor against a revolt on the Rhine led by Antonius Saturninus
Lucius Antonius Saturninus
Lucius Antonius Saturninus was the Roman governor of the province Germania Superior during the reign of the Emperor Domitian. In the spring of 89, motivated by a personal grudge against the Emperor, he led a rebellion known as the Revolt of Saturninus, involving the legions Legio XIV Gemina and...

. In September 96, Domitian was succeeded by Marcus Cocceius Nerva
Nerva
Nerva , was Roman Emperor from 96 to 98. Nerva became Emperor at the age of sixty-five, after a lifetime of imperial service under Nero and the rulers of the Flavian dynasty. Under Nero, he was a member of the imperial entourage and played a vital part in exposing the Pisonian conspiracy of 65...

, an old and childless senator who proved to be unpopular with the army.
Timeline

97    Emperor Nerva is forced by the Praetorian Guard, to adopt general Marcus Ulpius Trajanus as his heir and successor.

98    Trajan becomes Roman Emperor after the death of Nerva.

109    The Aqua Traiana is inaugurated by emperor Trajan, the aqueduct channels water from Lake Bracciano, 40 kilometers (25 miles) north-west of Rome.

 
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