Devastating Earthquake Strikes San Francisco
San Francisco had grown rapidly into a major Pacific port city by the early 20th century, built largely on wooden structures atop the seismically active San Andreas Fault. At 5:12 a.m. on April 18, 1906, a magnitude 7.9 earthquake struck, rupturing the fault for hundreds of miles and toppling buildings across the city. Fires ignited by broken gas lines and overturned stoves quickly spread, raging for three days due to water main failures and inadequate firefighting resources. Over 3,000 people died, and approximately 250,000 residents were left homeless amid the ruins. The disaster prompted immediate relief efforts from across the United States and abroad.
