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what is the biggest recorded earthquake in history
The world's largest earthquake with an instrumentally documented magnitude occurred on May 22, 1960 near Valdivia, in southern Chile
what was the magnitude of the 1960 valdivia earthquake
Various studies have placed the 1960 Valdivia earthquake at 9.4–9.6 on the moment magnitude scale.

Question: how many people died
Self-contained rewrite: how many people died in the 1960 valdivia earthquake