Timeline By mezacor 206 Han Empire starts 206 End of Qin Empire 220 Hah Empire Falls 221 Start of Qin Empire 224 Fall of Parhian Empire 247 Rise of the Parthian Empire 262 Ashoka Converts to Buddism 313 Constantine issues Edict of Milan 320 Start of Gupta Empire 323 Start of Alaxander's Hellenistic Empire 324 Rise of the Mauryan Empire 330 End of Alexander's Hellenistic Empire 476 End of Roman Empire 550 End of Gupta Empire Oct 20, 1927 Roman Empire begins B.C.E.