Main Page | See live article | Alphabetical index Centuries: 1st century - 2nd century - 3rd century Decades: 120s 130s 140s 150s 160s - 170s - 180s 190s 200s 210s 220s Years: 172 173 174 175 176 - 177 - 178 179 180 181 182 Events A systematic persecution of Christians begins in Rome under Roman Emperor Marcus Aurelius. Many Christians worship secretly in underground catacombs. Chinese troops suffer a crushing defeat against a confederacy of Central Asian tribes led by the Xianbei (see Wu Hu). Births Deaths S. Polycarpus, S. Blandina and other martyrs in Lyons This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.