2nd century BC

The 2nd century BC started the first day of 200 BC and ended the last day of 101 BC. It is considered part of the Classical era, although depending on the region being studied, other terms may be more proper. In the context of the Eastern Mediterranean, it is also referred to as the Hellenistic period.

Fresh from its victories in the Second Punic War, the Roman Republic continued its expansion into neighbouring territories, eventually annexing Greece, and the North African coast after completely destroying the city of Carthage at the end of the Third Punic War. Rome's influence was also felt in the near east, as crumbling Hellenistic states like the Seleucid Empire were forced to make treaties on Roman terms in order to avoid confrontation with the new masters of the western Mediterranean. The end of the century witnessed the reforming of the Roman Army from a citizen army to a voluntary professional force, under the guidance of the great general and statesman Gaius Marius—(Marian Reforms).

2nd century

The 2nd century is the period from 101 to 200 in accordance with the Julian calendar in the Common Era. It is considered part of the Classical era, epoch, or historical period.

Early in the century, the Roman Empire attained its greatest expansion under the emperor Trajan, but after his death became primarily defensive for the rest of its history. Much prosperity took place throughout the empire at this time, ruled as it were by the Five Good Emperors, a succession of just and able rulers. This period also saw the removal of the Jews from Jerusalem during the reign of Hadrian after Bar Kokhba's revolt. The last quarter of the century saw the end of the period of peace and prosperity known as the Pax Romana at the death of the emperor Marcus Aurelius, last of the "Five Good Emperors", and the accession of his ineffective and deranged son Commodus.

Although the Han Dynasty of China was firmly cemented into power and extended its imperial influence into Central Asia during the first half of the century, by the second half there was widespread corruption and open rebellion. This set in motion its ultimate decline, until it was overthrown in 220.