History Timeline By paisleyfan 206 fall of Qin dynasty 206 rise of the Han dynasty 220 fall of Han dynasty 221 rise of Qin dynasty 224 fall of parthian empire 247 rise of parthian empire 260 ashoka begins promoting buddjism 320 rise of gupta empire 322 rise of mauryan empire 323 fall of alexander's hellenistic empire 324 constantine issued edicts allowing christianity 336 rise of alexander's hellenistic empire 476 fall of roman empire 550 Fall of Gupta Empire Jan 1, 1927 Roman Empire starts Mar 2, 2022 Fall of Mauryan Empire (BCE)