170s
The 170s decade ran from January 1, 170, to December 31, 179.
| Millennium: | 1st millennium |
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Events
170
By place
Roman Empire
- The Suebian tribes of the Marcomanni cross the Danube and invade northern Italy. The Roman army (20,000 men) is destroyed near Carnuntum in Pannonia.
- The Marcomanni plunder Opitergium (modern Oderzo) and besiege Aquileia. This is the first time hostile forces have entered Italy since 101 BC.
- Emperor Marcus Aurelius writes in Sirmium (Pannonia) his first of 12 books of the Meditations in Koine Greek.
- The Costoboci cross the Danube (Dacia) and ravage Thrace in the Balkan Peninsula. They reach Eleusina, near Athens, and destroy the temple of the Eleusinian Mysteries.
- Marcus Aurelius orders humane treatment for Christians and slaves throughout the Roman Empire.
- An Equestrian Statue of Marcus Aurelius is erected in Rome.
- The Porta Nigra is built in Augusta Treverorum (modern Trier).
By topic
Arts and sciences
- The fundamental works of Ptolemy on cartography are published.
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Significant people
- Marcus Aurelius, Roman Emperor
- Caerellius Priscus, governor of Roman Britain
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