170 BC
Centuries: 3rd century BC - 2nd century BC - 1st century BC Decades: 220s BC 210s BC 200s BC 190s BC 180s BC - 170s BC - 160s BC 150s BC140s BC 130s BC 120s BC Years: 175 BC 174 BC 173 BC 172 BC 171 BC - 170 BC - 169 BC 168 BC 167 BC 166 BC 165 BC
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Events Antiochus IV Epiphanes invades Egypt and installs Ptolemy Physcon as king. Parchment is invented, in Pergamum. The earliest known paved streets appear in Rome. Crates of Mallus visits Rome. Births Dionysios Thrax, linguist Lucius Accius, Roman tragic poet Deaths Apollonius of Perga, Greek mathematician
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