2nd century

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

Events

Pieces of Hadrian's Wall remain near Greenhead and along the route, though large sections have been dismantled over the years to use the stones for various nearby construction projects.

• 96–180: Five Good Emperors of Rome: Nerva, Trajan, Hadrian, Antoninus Pius, Marcus Aurelius
• The kingdom of Aksum emerges
• 120-150: Bulgars migrate to Europe
• 122–132: Hadrian's Wall across Britain
• 132–135: Bar Kokhba's revolt against Rome
• 144: Marcion, rejected by Church of Rome, founds Marcionism
• 167-175: First Marcomanni War
• 178-180: Second Marcomanni War (depicted in the movie Gladiator)

Significant persons

Cai Lun, inventor of paper

• Rabbi Akiva Head of all the Jewish Sages
• Rabbi Yehuda haNasi Prince of the Jewish people
• Commodus, Roman Emperor, claimed to be Hercules reincarnated
• Galen, medical writer
• Irenaeus, 2nd Bishop of Lyons
• Montanus, Christian heretic
• Nagarjuna, founder of Madhyamaka Buddhism
• Pliny the Younger
• Plutarch, Roman historian
• Ptolemy, Greek astronomer, astrologer and geographer
• Septimius Severus, Roman Emperor
• Suetonius, Roman historian
• Valentinius, most famous Christian Gnostic
• Zhang Daoling, Taoist hermit, ascended to heaven

Inventions, discoveries, introductions

• Cai Lun invents paper (c. 105)
• Ptolemy compiles a catalogue of all stars visible to the naked eye. He also compiles 3 of the most influential books in western history: the Almagest which becomes the basis for western and Middle Eastern astronomy until the time of Copernicus and Kepler; the astrological treatise, Tetrabiblos and the Geographia
• 132: Zhang Heng invents first seismometer

Decades and years