Annotated Timeline for Unit 1 By melissa_dawn 206 Han Empire 206 BCE-220 CE 221 Qin Empire 221-206 BCE 300 Ashoka's conversion to buddhism around 300 BCE 312 Date of Edict of Milan 312 CE 320 Gupta Empire 320-550 CE 323 Alexander's "Hellenistic Empire" 323-30 BCE 324 Mauryan Empire 324-184 BCE Oct 20, 1000 Roman Empire 1000 BCE-324 CE Mar 2, 2022 Partian Empire 248 BCE-246 CE