2nd century
(1st century - 2nd century - 3rd century - other centuries)
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Events Roman Empire governed by the "Five Good Emperors" (96–180) – Nerva, Trajan, Hadrian, Antoninus Pius, Marcus Aurelius. The kingdom of Aksum emerges.
Significant persons Cai Lun, Chinese inventor Galen, medical writer Saint Irenaeus Pliny the Younger Plutarch Ptolemy Trajan Hadrian Antoninus Pius Marcus Aurelius Commodus Septimius Severus
Inventions, discoveries, introductions Cai Lun invents paper (c. 105) Ptolemy compiles a catalogue of all stars visible to the naked eye.
Decades and years
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