1923 Great Kantō earthquake collapsed due to urbanization. The 1923 earthquake led to record-high morbidity due to unsanitary conditions following the earthquake, and it prompted the establishment of antityphoid measures and the building of urban infrastructure. The Honda Point Disaster on the United States west coast, in which seven US Navy destroyers ran aground and 23 lives were lost, has been attributed to navigational errors caused by unusual currents set up by the earthquake in Japan. Beginning in 1960, every September 1 is designated as Disaster Prevention Day to commemorate the earthquake and remind people of the importance of preparedness, as August and September
1923 Great Kantō earthquake committed In the wake of the earthquake against thousands of ethnic Korean civilians (Zainichi) and Japanese socialists. The murders were carried out by right-wing groups such as elements of the Imperial Japanese Army, police and vigilantes in Tokyo and Yokohama. This earthquake devastated Tokyo, the port city of Yokohama, and the surrounding prefectures of Chiba, Kanagawa, and Shizuoka, and caused widespread damage throughout the Kantō region. The earthquake's force was so great that in Kamakura, over from the epicenter, it moved the Great Buddha statue, which weighs about , almost two feet. Estimated casualties totaled about 142,800 deaths, including about