220 BC
Centuries: 4th century BC - 3rd century BC - 2nd century BC Decades: 270s BC 260s BC 250s BC 240s BC 230s BC - 220s BC - 210s BC 200s BC 190s BC 180s BC 170s BC Years: 225 BC 224 BC 223 BC 222 BC 221 BC - 220 BC - 219 BC 218 BC 217 BC 216 BC 215 BC
Events October/November - Pharaoh Ptolemy IV of Egypt marries his sister, who rises to the throne as Arsinoe III of Egypt. Eratosthenes measures the size of the Earth. On the island Crete, the Gortynians occupy Matala. The Romans begin work on the Via Flaminia, a road leading north out of the city. Qin Shi Huang began a system of tree-lined roads to interconnect all parts of China, and began to join regional walls to form the Great Wall (Wan li chang cheng). Births Deaths
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