Most people don’t know much about the New Madrid earthquakes of 1811–12, rather the fame goes the the San Francisco Quake of 1906. The 1811 New Madrid earthquakeS went on and on for months. Like you said, they changed the course of the Mississippi River.
But, OMG the San Francisco Quake. Actually, The City was rebuilt with far better standards. It was the devastating fires that lasted for several days which caused the high number of people who died.
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