Seoul: rubble to 4th-largest economy in 50 yrs, 3 industries invented from scratch.
One surprising city fact per day — the hidden stories behind streets, subway stations, and skylines you thought you knew.
Seoul went from rubble to the world's 4th-largest metropolitan economy in just 50 years — building three entire industries (shipbuilding, semiconductors, K-pop) from absolute zero, each in under 30 years.
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