Centuries: 2nd century - 3rd century - 4th century
Decades: 200s 210s 220s 230s 240s - 250s - 260s 270s 280s 290s 300s
Years: 247 248 249 250 251 - 252 - 253 254 255 256 257
... Ob River
While not well suited for agriculture, Siberia has important mineral resources.
Siberia was used as a penal colony as early as the 17th ...
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