The 1st century was the century that lasted from year 1 to 100.
AD 1, map of Eurasia with the Roman Empire (red), Parthian Empire (brown), Chinese Han dynasty (yellow) and other states/areas with smaller states (light yellow)East Hemisphere in 50, in the middle of the 1st centuryEast Hemisphere in 99, at the end of the 1st century
During this period Europe, North Africa and the Near East fell under increasing domination by the Roman Empire. It continued expanding under the emperorClaudius (43). The reforms introduced by Augustus during his long reign stabilized the empire. Later in the century the Julio-Claudian Dynasty, which had been founded by Augustus came to an end with the death of Nero in 68. There followed the famous Year of Four Emperors, a brief period of civil war and instability, which was finally brought to an end by Vespasian, 9th Roman emperor, and founder of the Flavian Dynasty.
China continued to be dominated by the Han Dynasty, despite a 14-year interruption by the Xin dynasty under Wang Mang. Han rule was restored in 23. Wang Mang's rule represents the watershed between the Western/Former Han and the Eastern/Later Han. The capital was also moved from Chang'an to Luoyang.
The painting "Alexander the Great confronts Darius III at the Battle of Issos", detail of mosaic floor decoration from Pompeii, Italy is made. It is a Roman copy after a Greek painting of c. 310 BC, perhaps by Philoxenos or Helen of Egypt. It is now at Museo Archeologico Nazionale, Naples, Italy.
In 31, the Han Dynasty Chinese engineer and statesman Du Shi (d. 38) from Nanyang invented the first known hydraulic-powered bellows to heat the blast furnace in smelting cast iron. He used a complex mechanical device that was powered by the rushing current against a waterwheel, a practice that would continue in China.
Although Philo of Byzantium described the saqiya chain pump in the early 2nd century BC, the square-pallet chain pump was innovated in China during this century, mentioned first by the philosopher Wang Chong around 80 AD. Wang Chong also accurately described the water cycle in meteorology, and argued against the mainstream 'radiating influence' theory for solar eclipses, the latter of which was accepted by many, including Zhang Heng.
The Chinese astronomer Liu Xin (d. 23) documented 1080 different stars, amongst other achievements.
According to the New Testament, during the reign of Tiberius, Jesus, a Jewish religious leader from Galilee, was crucified in Jerusalem on the charge of blasphemy for claiming to be the Son of God. But "God raised him from the dead" three days later, see Resurrection of Jesus. Over the next few decades his followers, following the Great Commission, including the apostle Paul, carried his message throughout the Greek-speaking regions of Asia Minor, eventually introducing it to Rome itself. Roman rulers began to persecute the new sect almost immediately (the emperor Nero accused the Christians of starting the fires that destroyed much of Rome in 64 AD), and would continue to do so for centuries, sometimes vigorously, and other times passively. Christian tradition records that all of Christ's apostles except John the Evangelist suffered martyrdom.