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Meditation was first developed in India. The oldest documented evidence of the practice of meditation is wall arts in the Indian subcontinent from approximately 5,000 to 3,500 BCE, showing people seated in meditative postures with half-closed eyes.

The Badari was followed by the Naqada culture: the Amratian (Naqada I). The Naqada culture is an archaeological culture of Chalcolithic Predynastic Egypt (ca. 4000–3000 BC), named for the town of Naqada, Qena Governorate. A 2013 Oxford University radio carbon dating study of the Predynastic period, however, suggests a much later date beginning sometime between 3,800–3,700 BC.

A census counted fifty-nine million people in the Han empire.

Ping of Han established a national school system.

Ping died after being poisoned by Wang Mang, who became acting emperor.

Liu Xin completed a star catalogue and calculated the length of the year.

Wang Mang declared himself emperor of the Xin dynasty.

The Illyrian tribes revolted and had to be crushed, and three full legions under the command of Publius Quinctilius Varus were ambushed and destroyed at the Battle of the Teutoburg Forest in AD 9 by Germanic tribes led by Arminius.

Wang Mang introduced an income tax of ten percent for professionals and skilled laborers.

In AD 13, a law was passed which extended Augustus' powers over the provinces to Tiberius, so that Tiberius' legal powers were equivalent to, and independent from, those of Augustus.

In AD 14 Augustus died at the age of seventy-five, having ruled the empire for forty years, and was succeeded as emperor by Tiberius.

The early years of Tiberius's reign were relatively peaceful. Tiberius secured the overall power of Rome and enriched its treasury. However, his rule soon became characterized by paranoia. He began a series of treason trials and executions, which continued until his death in 37.

Mother Lü initiated a rebellion against a county magistrate in Haiqu County, near modern Rizhao.

Lülin forces broke the siege of Kunyang, in modern Ye County, by a vastly superior Xin army.

Lülin rebels stormed the Weiyang Palace and killed Wang. The Gengshi Emperor ascended the throne, restoring the Han dynasty.

The Gengshi Emperor was executed.

The Red Eyebrows appointed Liu Penzi their emperor.

The Han warlord Emperor Guangwu of Han took the title emperor.

He left power in the hands of the commander of the guard, Lucius Aelius Sejanus. Tiberius himself retired to live at his villa on the island of Capri in 26, leaving the administration in the hands of Sejanus, who carried on the persecutions with contentment.

The Red Eyebrows surrendered to the Han dynasty.

Sejanus also began to consolidate his own power; in 31 he was named co-consul with Tiberius and married Livilla, the emperor's niece.

Ban Gu, the co-author of the Book of Han, is born.

Tiberius died in Misenum on 16 March AD 37, a few months before his 78th birthday.

At the time of Tiberius's death, most of the people who might have succeeded him had been killed. The logical successor (and Tiberius' own choice) was his 24-year-old grandnephew, Gaius, better known as "Caligula" ("little boots").

The Caligula that emerged in late 37 demonstrated features of mental instability that led modern commentators to diagnose him with such illnesses as encephalitis, which can cause mental derangement, hyperthyroidism, or even a nervous breakdown (perhaps brought on by the stress of his position).

In 41, Caligula was assassinated by the commander of the guard Cassius Chaerea. Also killed were his fourth wife Caesonia and their daughter Julia Drusilla. For two days following his assassination, the senate debated the merits of restoring the Republic.

Claudius was a younger brother of Germanicus and had long been considered a weakling and a fool by the rest of his family. The Praetorian Guard, however, acclaimed him as emperor. Claudius was neither paranoid like his uncle Tiberius, nor insane like his nephew Caligula, and was, therefore, able to administer the Empire with reasonable ability.

In 43, Claudius resumed the Roman conquest of Britannia that Julius Caesar had begun in the 50s BC, and incorporated more Eastern provinces into the empire.

Vietnam fell into Han control.

Very little is known about the Library of Alexandria during the time of the Roman Principate (27 BC–284 AD). The emperor Claudius (ruled 41–54 AD) is recorded to have built an addition onto the Library, but it seems that the Library of Alexandria's general fortunes followed those of the city of Alexandria itself.

In his own family life, Claudius was less successful. His wife Messalina cuckolded him; when he found out, he had her executed and married his niece, Agrippina the Younger.

The same was evidently the case even for the position of head librarian; the only known head librarian from the Roman Period was a man named Tiberius Claudius Balbilus, who lived in the middle of the first century AD and was a politician, administrator, and military officer with no record of substantial scholarly achievements.

Claudius was deified later that year. The death of Claudius paved the way for Agrippina's own son, the 17-year-old Lucius Domitius Nero.

Nero ruled from 54 to 68. During his rule, Nero focused much of his attention on diplomacy, trade, and increasing the cultural capital of the empire.

Guangwu died. He was succeeded by his son Emperor Ming of Han.

However, he was egotistical and had severe troubles with his mother, who he felt was controlling and overbearing. After several attempts to kill her, he finally had her stabbed to death.

He believed himself a god and decided to build an opulent palace for himself. The so-called Domus Aurea, meaning golden house in Latin, was constructed atop the burnt remains of Rome after the Great Fire of Rome (64). Nero was ultimately responsible for the fire. By this time Nero was hugely unpopular despite his attempts to blame the Christians for most of his regime's problems.

The Buddhist White Horse Temple was established in Luoyang.

Servius Sulpicius Galba, born as Lucius Livius Ocella Sulpicius Galba, was a Roman emperor who ruled from AD 68 to 69. He was the first emperor in the Year of the Four Emperors and assumed the position following Emperor Nero's suicide. Galba's physical weakness and general apathy led to him being selected over by favorites. Unable to gain popularity with the people or maintain the support of the Praetorian Guard, Galba was murdered by Otho, who became emperor in his place.

A military coup drove Nero into hiding. Facing execution at the hands of the Roman Senate, he reportedly committed suicide in 68. According to Cassius Dio, Nero's last words were "Jupiter, what an artist perishes in me!".

Marcus Otho was Roman emperor for three months, from 15 January to 16 April 69. He was the second emperor of the Year of the Four Emperors. Inheriting the problem of the rebellion of Vitellius, commander of the army in Germania Inferior, Otho led a sizeable force that met Vitellius' army at the Battle of Bedriacum. After initial fighting resulted in 40,000 casualties, and a retreat of his forces, Otho committed suicide rather than fight on, and Vitellius was proclaimed emperor.

Aulus Vitellius was Roman Emperor for eight months, from 19 April to 20 December AD 69. Vitellius was proclaimed emperor following the quick succession of the previous emperors Galba and Otho, in a year of civil war known as the Year of the Four Emperors. His claim to the throne was soon challenged by legions stationed in the eastern provinces, who proclaimed their commander Vespasian emperor instead. War ensued, leading to a crushing defeat for Vitellius at the Second Battle of Bedriacum in northern Italy. Once he realized his support was wavering, Vitellius prepared to abdicate in favor of Vespasian. He was not allowed to do so by his supporters, resulting in a brutal battle for Rome between Vitellius' forces and the armies of Vespasian. He was executed in Rome by Vespasian's soldiers on 20 December 69.

As a result of the Second Battle of Bedriacum, Vespasian became the fourth and last emperor who reigned in the Year of the Four Emperors, he founded the Flavian dynasty that ruled the Empire for 27 years.

The Revolt of the Batavi took place in the Roman province of Germania Inferior between AD 69 and 70. It was an uprising against the Roman Empire started by the Batavi, a small but militarily powerful Germanic tribe that inhabited Batavia, on the delta of the river Rhine. They were soon joined by the Celtic tribes from Gallia Belgica and some Germanic tribes.

Vespasian began construction on the Colosseum.

The windwheel of Hero of Alexandria (10 AD – 70 AD) marks one of the first recorded instances of wind powering a machine in history.

A punitive Han expedition against the Xiongnu captured territory in the area of modern Hami City.

Ming died. He was succeeded by his son Emperor Zhang of Han.

Titus, Vespasian's successor, quickly proved his merit, although his short reign was marked by disaster, including the eruption of Mount Vesuvius in Pompeii. He held the opening ceremonies in the still unfinished Colosseum but died in 81.

Mount Vesuvius erupted in Pompeii.

Titus' brother Domitian succeeded him. Having exceedingly poor relations with the Senate, Domitian was murdered in September 96.

Wang Chong correctly theorized the nature of the water cycle.

Domitian repelled the Dacians in his Dacian War; the Dacians had sought to conquer Moesia, south of the Danube in the Roman Balkans.

Jin Midi died.

Zhang died. He was succeeded by his son Emperor He of Han.

Han and allied forces defeated the army of the Northern Chanyu and accepted the surrender of two hundred thousand Xiongnu soldiers in the Altai Mountains.

Between the 1st and the 3rd centuries AD, ancient Arameans adopted Christianity, thus replacing the old polytheistic Aramean religion. In the same tame, Christian Bible was translated into Aramaic.

On 18 September 96, Domitian was assassinated in a palace conspiracy involving members of the Praetorian Guard and several of his freedmen. On the same day, Nerva was declared emperor by the Roman Senate. As the new ruler of the Roman Empire, he vowed to restore liberties that had been curtailed during the autocratic government of Domitian.

Nerva's brief reign was marred by financial difficulties and his inability to assert his authority over the Roman army. A revolt by the Praetorian Guard in October 97 essentially forced him to adopt an heir. After some deliberation, Nerva adopted Trajan, a young and popular general, as his successor.

After barely fifteen months in office, Nerva died of natural causes on 27 January 98. Upon his death, he was succeeded and deified by Trajan.

Xu Shen completed the Shuowen Jiezi.

Upon his accession to the throne, Trajan prepared and launched a carefully planned military invasion in Dacia, a region north of the lower Danube whose inhabitants the Dacians had long been an opponent to Rome. In 101, Trajan personally crossed the Danube and defeated the armies of the Dacian king Decebalus at the Battle of Tapae.

Decebalus complied with the terms for a time, but before long he began inciting revolt. In 105 Trajan once again invaded and after a yearlong invasion ultimately defeated the Dacians by conquering their capital, Sarmizegetusa Regia. King Decebalus, cornered by the Roman cavalry, eventually committed suicide rather than being captured and humiliated in Rome.

He of Han died.

He's infant son Emperor Shang of Han was made emperor of Han with empress dowager Deng Sui acting as regent.

The conquest of Dacia was a major accomplishment for Trajan, who ordered 123 days of celebration throughout the empire. He also constructed Trajan's Column in the middle of Trajan's Forum in Rome to glorify the victory.

Cai Lun invented papermaking.

Shang died.

Shang's young cousin Emperor An of Han became emperor, with Deng Sui continuing to act as regent.

In 112, Trajan was provoked by the decision of Osroes I to put his own nephew Axidaris on the throne of the Kingdom of Armenia.

One of the best preserved was the ancient Ulpian Library built by the Emperor Trajan. Completed in 112/113 AD, the Ulpian Library was part of Trajan's Forum built on the Capitoline Hill. Trajan's Column separated the Greek and Latin rooms which faced each other. The structure was approximately fifty feet high with the peak of the roof reaching almost seventy feet.

Trajan first invaded Armenia. He deposed the king and annexed it to the Roman Empire.

The 115 Antioch earthquake occurred on 13 December 115 AD. It had an estimated magnitude of 7.5 on the surface wave magnitude scale and an estimated maximum intensity of XI (Extreme) on the Mercalli intensity scale. The origin of the reported death toll of 260,000 is uncertain, as it only appears in catalogues of about the last hundred years.

Then Trajan turned south into Parthian territory in Mesopotamia, taking the cities of Babylon, Seleucia, and finally the capital of Ctesiphon in 116.

In 116, Trajan captured the great city of Susa. He deposed the emperor Osroes I and put his own puppet ruler Parthamaspates on the throne.

Trajan suppressed the Kitos War, a Jewish uprising across the eastern provinces.

Failure to nominate an heir could invite chaotic, destructive wresting of power by a succession of competing claimants – a civil war. Too early a nomination could be seen as an abdication, and reduce the chance for an orderly transmission of power. As Trajan lay dying, nursed by his wife, Plotina, and closely watched by Perfect Attianus, he could have lawfully adopted Hadrian as heir, by means of a simple deathbed wish, expressed before witnesses; but when an adoption document was eventually presented, it was signed not by Trajan but by Plotina, and was dated the day after Trajan's death.

Early in 117, Trajan grew ill and set out to sail back to Italy. His health declined throughout the spring and summer of 117, something publicly acknowledged by the fact that a bronze bust displayed at the time in the public baths of Ancyra showed him clearly aged and emaciated. After reaching Selinus (modern Gazipaşa) in Cilicia, which was afterward called Trajanopolis, he suddenly died from edema, probably on 11 August.

Despite his own excellence as a military administrator, Hadrian's reign was marked more by the defense of the empire's vast territories, rather than major military conflicts.

Hadrian relieved Judea's governor, the outstanding Moorish general Lusius Quietus, of his personal guard of Moorish auxiliaries; then he moved on to quell disturbances along the Danube frontier. There was no public trial for the four – they were tried in absentia, hunted down, and killed. Hadrian claimed that Attianus had acted on his own initiative, and rewarded him with senatorial status and consular rank; then pensioned him off, no later than 120. Hadrian assured the senate that henceforth their ancient right to prosecute and judge their own would be respected. In Rome, Hadrian's former guardian and current Praetorian Prefect, Attianus, claimed to have uncovered a conspiracy involving Lusius Quietus and three other leading senators, Lucius Publilius Celsus, Aulus Cornelius Palma Frontonianus, and Gaius Avidius Nigrinus.

Prior to Hadrian's arrival in Britannia, the province had suffered a major rebellion, from 119 to 121. Inscriptions tell of an expeditio Britannica that involved major troop movements, including the dispatch of a detachment (vexillatio), comprising some 3,000 soldiers. Fronto writes about military losses in Britannia at the time.

Having filled the offices of quaestor and praetor with more than usual success, Antoninus Pius obtained the consulship in 120 having as his colleague Lucius Catilius Severus.

Hadrian surrendered Trajan's conquests in Mesopotamia, considering them to be indefensible. There was almost a war with Vologases III of Parthia around 121, but the threat was averted when Hadrian succeeded in negotiating a peace.

A shrine was erected in York to Britannia as the divine personification of Britain; coins were struck, bearing her image, identified as BRITANNIA. By the end of 122, Hadrian had concluded his visit to Britannia. He never saw the finished wall that bears his name.

Coin legends of 119–120 attest that Quintus Pompeius Falco was sent to restore order. In 122 Hadrian initiated the construction of a wall, "to separate Romans from barbarians". The idea that the wall was built in order to deal with an actual threat or its resurgence, however, is probable but nevertheless conjectural.

In 123, Hadrian crossed the Mediterranean to Mauretania, where he personally led a minor campaign against local rebels. The visit was cut short by reports of war preparations by Parthia; Hadrian quickly headed eastwards. At some point, he visited Cyrene, where he personally funded the training of young men from well-bred families for the Roman military. Cyrene had benefited earlier (in 119) from his restoration of public buildings destroyed during the earlier Jewish revolt.

Soon after, in 125, Hadrian appointed Quintus Marcius Turbo as his Praetorian Prefect. Turbo was his close friend, a leading figure of the equestrian order, a senior court judge, and a procurator.

An died.

The Marquess of Beixiang became emperor of the Han dynasty.

The Marquess of Beixiang died.

An's son Emperor Shun of Han became emperor of the Han dynasty.

Zhang Heng invented a seismometer capable of indicating the direction of earthquakes.

Antoninus Pius was next appointed by Emperor Hadrian as one of the four proconsuls to administer Italia, his district including Etruria, where he had estates. He then greatly increased his reputation by his conduct as proconsul of Asia, probably during 134–135.

The Library of Celsus in Ephesus, Anatolia, now part of Selçuk, Turkey was built in honor of the Roman Senator Tiberius Julius Celsus Polemaeanus by Celsus' son, Tiberius Julius Aquila Polemaeanus. The library was built to store 12,000 scrolls and to serve as a monumental tomb for Celsus. The library's ruins were hidden under debris of the city of Ephesus that was deserted in early Middle Ages.

Hadrian's army crushed the Bar Kokhba revolt, a massive Jewish uprising in Judea (132–136).

Antoninus Pius acquired much favor with Hadrian, who adopted him as his son and successor on 25 February 138, after the death of his first adopted son Lucius Aelius, on the condition that Antoninus would, in turn, adopt Marcus Annius Verus, the son of his wife's brother, and Lucius, son of Lucius Aelius, who afterward became the emperors, Marcus Aurelius and Lucius Verus.

Hadrian died in the year 138 on 10 July, in his villa at Baiae at the age of 62.

Antoninus Pius's reign was comparatively peaceful; there were several military disturbances throughout the Empire in his time, in Mauretania, Judaea, and amongst the Brigantes in Britain, but none of them are considered serious.

Marcus Aurelius had already been created consul with Antoninus in 140, receiving the title of Caesar, i.e., heir apparent. As Antoninus aged, Marcus took on more administrative duties.

The Cantong qi was published.

Meditation was first developed in India. The oldest documented evidence of the practice of meditation is wall arts in the Indian subcontinent from approximately 5,000 to 3,500 BCE, showing people seated in meditative postures with half-closed eyes.

The Badari was followed by the Naqada culture: the Amratian (Naqada I). The Naqada culture is an archaeological culture of Chalcolithic Predynastic Egypt (ca. 4000–3000 BC), named for the town of Naqada, Qena Governorate. A 2013 Oxford University radio carbon dating study of the Predynastic period, however, suggests a much later date beginning sometime between 3,800–3,700 BC.

A census counted fifty-nine million people in the Han empire.

Ping of Han established a national school system.

Ping died after being poisoned by Wang Mang, who became acting emperor.

Liu Xin completed a star catalogue and calculated the length of the year.

Wang Mang declared himself emperor of the Xin dynasty.

The Illyrian tribes revolted and had to be crushed, and three full legions under the command of Publius Quinctilius Varus were ambushed and destroyed at the Battle of the Teutoburg Forest in AD 9 by Germanic tribes led by Arminius.

Wang Mang introduced an income tax of ten percent for professionals and skilled laborers.

In AD 13, a law was passed which extended Augustus' powers over the provinces to Tiberius, so that Tiberius' legal powers were equivalent to, and independent from, those of Augustus.

In AD 14 Augustus died at the age of seventy-five, having ruled the empire for forty years, and was succeeded as emperor by Tiberius.

The early years of Tiberius's reign were relatively peaceful. Tiberius secured the overall power of Rome and enriched its treasury. However, his rule soon became characterized by paranoia. He began a series of treason trials and executions, which continued until his death in 37.

Mother Lü initiated a rebellion against a county magistrate in Haiqu County, near modern Rizhao.

Lülin forces broke the siege of Kunyang, in modern Ye County, by a vastly superior Xin army.

Lülin rebels stormed the Weiyang Palace and killed Wang. The Gengshi Emperor ascended the throne, restoring the Han dynasty.

The Gengshi Emperor was executed.

The Red Eyebrows appointed Liu Penzi their emperor.

The Han warlord Emperor Guangwu of Han took the title emperor.

He left power in the hands of the commander of the guard, Lucius Aelius Sejanus. Tiberius himself retired to live at his villa on the island of Capri in 26, leaving the administration in the hands of Sejanus, who carried on the persecutions with contentment.

The Red Eyebrows surrendered to the Han dynasty.

Sejanus also began to consolidate his own power; in 31 he was named co-consul with Tiberius and married Livilla, the emperor's niece.

Ban Gu, the co-author of the Book of Han, is born.

Tiberius died in Misenum on 16 March AD 37, a few months before his 78th birthday.

At the time of Tiberius's death, most of the people who might have succeeded him had been killed. The logical successor (and Tiberius' own choice) was his 24-year-old grandnephew, Gaius, better known as "Caligula" ("little boots").

The Caligula that emerged in late 37 demonstrated features of mental instability that led modern commentators to diagnose him with such illnesses as encephalitis, which can cause mental derangement, hyperthyroidism, or even a nervous breakdown (perhaps brought on by the stress of his position).

In 41, Caligula was assassinated by the commander of the guard Cassius Chaerea. Also killed were his fourth wife Caesonia and their daughter Julia Drusilla. For two days following his assassination, the senate debated the merits of restoring the Republic.

Claudius was a younger brother of Germanicus and had long been considered a weakling and a fool by the rest of his family. The Praetorian Guard, however, acclaimed him as emperor. Claudius was neither paranoid like his uncle Tiberius, nor insane like his nephew Caligula, and was, therefore, able to administer the Empire with reasonable ability.

In 43, Claudius resumed the Roman conquest of Britannia that Julius Caesar had begun in the 50s BC, and incorporated more Eastern provinces into the empire.

Vietnam fell into Han control.

Very little is known about the Library of Alexandria during the time of the Roman Principate (27 BC–284 AD). The emperor Claudius (ruled 41–54 AD) is recorded to have built an addition onto the Library, but it seems that the Library of Alexandria's general fortunes followed those of the city of Alexandria itself.

In his own family life, Claudius was less successful. His wife Messalina cuckolded him; when he found out, he had her executed and married his niece, Agrippina the Younger.

The same was evidently the case even for the position of head librarian; the only known head librarian from the Roman Period was a man named Tiberius Claudius Balbilus, who lived in the middle of the first century AD and was a politician, administrator, and military officer with no record of substantial scholarly achievements.

Claudius was deified later that year. The death of Claudius paved the way for Agrippina's own son, the 17-year-old Lucius Domitius Nero.

Nero ruled from 54 to 68. During his rule, Nero focused much of his attention on diplomacy, trade, and increasing the cultural capital of the empire.

Guangwu died. He was succeeded by his son Emperor Ming of Han.

However, he was egotistical and had severe troubles with his mother, who he felt was controlling and overbearing. After several attempts to kill her, he finally had her stabbed to death.

He believed himself a god and decided to build an opulent palace for himself. The so-called Domus Aurea, meaning golden house in Latin, was constructed atop the burnt remains of Rome after the Great Fire of Rome (64). Nero was ultimately responsible for the fire. By this time Nero was hugely unpopular despite his attempts to blame the Christians for most of his regime's problems.

The Buddhist White Horse Temple was established in Luoyang.

Servius Sulpicius Galba, born as Lucius Livius Ocella Sulpicius Galba, was a Roman emperor who ruled from AD 68 to 69. He was the first emperor in the Year of the Four Emperors and assumed the position following Emperor Nero's suicide. Galba's physical weakness and general apathy led to him being selected over by favorites. Unable to gain popularity with the people or maintain the support of the Praetorian Guard, Galba was murdered by Otho, who became emperor in his place.

A military coup drove Nero into hiding. Facing execution at the hands of the Roman Senate, he reportedly committed suicide in 68. According to Cassius Dio, Nero's last words were "Jupiter, what an artist perishes in me!".

Marcus Otho was Roman emperor for three months, from 15 January to 16 April 69. He was the second emperor of the Year of the Four Emperors. Inheriting the problem of the rebellion of Vitellius, commander of the army in Germania Inferior, Otho led a sizeable force that met Vitellius' army at the Battle of Bedriacum. After initial fighting resulted in 40,000 casualties, and a retreat of his forces, Otho committed suicide rather than fight on, and Vitellius was proclaimed emperor.

Aulus Vitellius was Roman Emperor for eight months, from 19 April to 20 December AD 69. Vitellius was proclaimed emperor following the quick succession of the previous emperors Galba and Otho, in a year of civil war known as the Year of the Four Emperors. His claim to the throne was soon challenged by legions stationed in the eastern provinces, who proclaimed their commander Vespasian emperor instead. War ensued, leading to a crushing defeat for Vitellius at the Second Battle of Bedriacum in northern Italy. Once he realized his support was wavering, Vitellius prepared to abdicate in favor of Vespasian. He was not allowed to do so by his supporters, resulting in a brutal battle for Rome between Vitellius' forces and the armies of Vespasian. He was executed in Rome by Vespasian's soldiers on 20 December 69.

As a result of the Second Battle of Bedriacum, Vespasian became the fourth and last emperor who reigned in the Year of the Four Emperors, he founded the Flavian dynasty that ruled the Empire for 27 years.

The Revolt of the Batavi took place in the Roman province of Germania Inferior between AD 69 and 70. It was an uprising against the Roman Empire started by the Batavi, a small but militarily powerful Germanic tribe that inhabited Batavia, on the delta of the river Rhine. They were soon joined by the Celtic tribes from Gallia Belgica and some Germanic tribes.

Vespasian began construction on the Colosseum.

The windwheel of Hero of Alexandria (10 AD – 70 AD) marks one of the first recorded instances of wind powering a machine in history.

A punitive Han expedition against the Xiongnu captured territory in the area of modern Hami City.

Ming died. He was succeeded by his son Emperor Zhang of Han.

Titus, Vespasian's successor, quickly proved his merit, although his short reign was marked by disaster, including the eruption of Mount Vesuvius in Pompeii. He held the opening ceremonies in the still unfinished Colosseum but died in 81.

Mount Vesuvius erupted in Pompeii.

Titus' brother Domitian succeeded him. Having exceedingly poor relations with the Senate, Domitian was murdered in September 96.

Wang Chong correctly theorized the nature of the water cycle.

Domitian repelled the Dacians in his Dacian War; the Dacians had sought to conquer Moesia, south of the Danube in the Roman Balkans.

Jin Midi died.

Zhang died. He was succeeded by his son Emperor He of Han.

Han and allied forces defeated the army of the Northern Chanyu and accepted the surrender of two hundred thousand Xiongnu soldiers in the Altai Mountains.

Between the 1st and the 3rd centuries AD, ancient Arameans adopted Christianity, thus replacing the old polytheistic Aramean religion. In the same tame, Christian Bible was translated into Aramaic.

On 18 September 96, Domitian was assassinated in a palace conspiracy involving members of the Praetorian Guard and several of his freedmen. On the same day, Nerva was declared emperor by the Roman Senate. As the new ruler of the Roman Empire, he vowed to restore liberties that had been curtailed during the autocratic government of Domitian.

Nerva's brief reign was marred by financial difficulties and his inability to assert his authority over the Roman army. A revolt by the Praetorian Guard in October 97 essentially forced him to adopt an heir. After some deliberation, Nerva adopted Trajan, a young and popular general, as his successor.

After barely fifteen months in office, Nerva died of natural causes on 27 January 98. Upon his death, he was succeeded and deified by Trajan.