MAPS OF HISTORY · ON THIS DAY · May 31
THE DAY IN HISTORY · MAY 31
May 31 in history
1223 — Kalka River
31 May 1223 — Three Rus princes and their Cuman allies chase a feigned retreat for nine days, then are annihilated at the Kalka. The captured princes are suffocated under the victory platform. Then the raiders simply leave — and the Rus conclude it was a passing horror, and change nothing.
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