320s

Year in Review 3rd Century - Year in Review 4th Century

Centuries: 3rd century - 4th century - 5th century

Decades: 270s - 280s? - 290s? - 300s - 310s - 320s - 330s - 340s - 350s? - 360s - 370s?

Years: 320? 321 322? 323? 324 325 326? 327? 328? 329

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Events:

• Constantine starts legislating Christian beliefs into civil law. (eg: blue laws)