The fertility of its territory, and especially of the neighbouring ridge of the Mons Massicus, so celebrated for its wines, must also have tended to promote the prosperity of Sinuessa, but we hear little of it under the Roman Empire. It received a body of military colonists, apparently under the Triumvirate, but did not retain the rank of a colonia and is termed by Pliny as well as the Liber Coloniarum only an oppidum, or ordinary municipal town. It was the furthest town in Latium, as that geographical term was understood in the days of Strabo and Pliny, or Latium adjectum, as the latter author terms it; and its territory extended to the river Savo, which formed the limit between Latium and Campania. At an earlier period indeed Polybius reckoned it a town of Campania, and Ptolemy follows the same classification, as he makes the Liris the southern limit of Latium; but the division adopted by Strabo and Pliny is probably the most correct. The Itineraries all notice Sinuessa as a still existing town on the Appian Way, and place it nine miles from Minturnae, which is, however, considerably short of the true distance. In his Meditations, written around AD 180, the emperor Marcus Aurelius notes that his friend Junius Rusticus sent a letter to Marcus's mother from Sinuessa. The period of its destruction is unknown.