The deadliest disaster in Japan's history was the Great Kanto Earthquake of 1923, which claimed an estimated 140,000 lives. The earthquake had a magnitude of 7.9 on the Richter scale and caused widespread devastation across Tokyo and Yokohama. In the aftermath, Japan launched a massive reconstruction program and learned valuable lessons about disaster preparedness. Today, Japan is one of the most prepared countries in the world when it comes to natural disasters, with advanced early warning systems, community resilience training, and government investment in disaster response and recovery efforts.