Roman legionaries engrave on the rock of the Trenčín Castle (Slovakia) the name of the town Laugaritio, marking the northernmost point of Roman presence in that part of Europe.
Marcus Aurelius drives the Marcomanni out of the empire for good, and reinforces the border. To repopulate and rebuild a devastated Pannonia, Rome allows the first German colonists to enter territory controlled by Rome.
Han DynastyChina - the full title of the Nine Chapters on the Mathematical Art appears on two bronze standard measures dated to this year, yet there is speculation that the same book existed beforehand only under different titles. In the 3rd century, Liu Hui would provide commentary on this important early Chinese mathematical treatise.
Births
Sima Yi, Chinese general, strategist and politician of Wei (d. 251)