Unit 1 Timeline By barreai 206 End of Qin Empire(CE) 206 Start of Han Empire (BCE) 220 End of Han Empire (CE) 221 Start of Qin Empire (BCE) 226 End of Partian Empire (CE) 264 Ashoka Began Promoting Buddhism (BCE) 312 Constantine issued edict allowing Christianity (CE) 320 Start of Gupta Empire (CE) 324 Start of Mauryan Empire (BCE) 336 Start of Hellenistic Empire (BCE) 476 End of Roman Empire (CE) 550 End of Gupta Empire (CE) Jan 1, 1927 Start of Roman Empire (BCE) (supposed to be 27 BCE not 1927) (supposed to be 27 not 1927) Jan 1, 1930 End of Hellenistic Empire (BCE) (Supposed to be 30 not 1930) (Supposed to be 30 not 1930) Mar 2, 2022 End of the Mauryan Empire (BCE) (BCE) Mar 2, 2022 Start of Partian Empire (BCE)