For 10 points, name this area in which the Romans founded Valencia.
A crooked politician named Lucius Piso was assassinated in this region. A bandit from this region came forth to claim a bounty on his own head, according to a story by Cassius Dio about the meeting of Augustus and Corocotta. A settlement in this region refused to accept Mancinus as a prisoner and accepted a peace treaty negotiated by Tiberius (*) Gracchus. Mass suicides occurred after a twenty-year war in this region was ended when a city was encircled by Scipio Africanus the Younger. This region was once divided into provinces termed "Citerior" and "Ulterior." The city of Numantia was located here, and a major surviving landmark in this region is the Roman Aqueduct at Segovia. It was the birthplace of Trajan and Hadrian. For 10 points, name this area in which the Romans founded Valencia.
A crooked politician named Lucius Piso was assassinated in this region.
Hispania [or the Iberian Peninsula; or Spain, however anachronistic]