Tables of History : A.D. 300 - 399

Other periods available:
1-99 | 100-199 | 200-299 | 300-399
400-499 | 500-599 | 600-699 | 700-799
800-899 | 900-999 | 1000-1099 | 1100-1199
1200-1299 | 1300-1399 | 1400-1499 | 1500-1599
1600-1699 | 1700-1799 | 1800-1899 | 1900-1919
1920-1939 | 1940-1959 | 1960-1979 | 1980-1999

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312
  • Battle of the Milvian Bridge
    One of the contenders for the imperial title, Constantine (later "the Great") wins a decisive and final battle at the Milvian Bridge just outside Rome, and becomes emperor.
313
  • Edict of Milan
    Roman Emperor Constantine "the Great" decrees toleration of Christianity.
  • The Rhine is bridged
    Near Köln, the eldest known bridge across the Rhine is erected.
324
  • Foundation of Constantinople
    Roman Emperor Constantine "the Great" moves his capital to the new city of Constantinople ("Constantine's City"), located by the old Greek city of Byzantion.
325
  • Council of Nicaea
    At a Church council called by the Emperor Constantine, an assembly of Christian bishops decide to condemn Arianism as heresy, adopting instead the creed of Athanasius (the "Nicene Creed") as dogma.
337
  • Roman Emperor Constantine "the Great" dies
    Constantine is succeeded by his three sons Constantine II, Constantius II and Constans.
340
  • Battle of Aquileia
    Constantine II is killed, fighting his brother Constans. Rome once again divides into an Eastern and a Western Empire, under Constantius II and Constans, respectively.
350
  • Persians retake Armenia from Rome
360
  • The Huns invade Europe
  • Julian "the Apostate" becomes Emperor, renouncing Christianity
381
  • First Council of Constantinople
    Church leaders meet to confirm the Nicene Creed (see 325) and to condemn Macedonianism and Apollinarianism.
383
  • Roman legions begin to leave Britannia
389
  • The Library at Alexandria burns

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Last modified: July 20, 2001