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321

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

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

Years: 316 317 318 319 320 - 321 - 322 323 324 325 326

Events

Publication of the first blue law by Constantine: trade is forbidden on Sundays; agriculture is allowed
The Roman Catholic church is allowed to hold property

Births

Deaths

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... 2nd century - 3rd century - 4th century Decades: 190s 200s 210s 220s 230s - 240s - 250s 260s 270s 280s 290s Years: 237 238 239 240 241 - 242 - 243 244 ...