-
206
the Han Empire
206 BCE–220 CE -
221
the Qin Empire
221 and 206 BC. -
247
the Parthian Empire
247 BC - 224 AD -
275
Constantine issued edict allowing Christianity
27 February c. 272 – 22 May 337 -
304
Ashoka began promoting Buddhism
304 BC – 232 BC -
320
the Gupta Empire
ca. A.D. 320-550 -
321
the Mauryan Empire
321 to 185 B.C.E. -
323
Alexander's Hellenistic Empire
323BC - 146BC -
the Roman Empire
27 BC to the 5th century AD
