San Francisco earthquake
Shaking and fires destroy 80% of the city and teach seismology

On 18 April 1906 the San Andreas Fault ruptured for hundreds of kilometres. The quake and fires that raged for days destroyed about 80% of San Francisco and killed some 3,000 people. Studies of the disaster helped explain how earthquakes occur.
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Meanwhile around the world (±25 years)
Whole world
- 1914–1918 World War I — 8 years later
- 1918–1920 Spanish flu pandemic — 12 years later
- 1920 League of Nations founded — 14 years later
Europe
- 1886 Benz's first automobile — 20 years earlier
- 1889 Eiffel Tower — 17 years earlier
- 1905 Einstein's miracle year and relativity — 1 year earlier
- 1919 Treaty of Versailles — 13 years later
- 1928 Discovery of penicillin — 22 years later
Eastern Europe & Russia
- 1905–1907 Russian Revolution of 1905 — 1 year earlier
- 1908 Tunguska event — 2 years later
- 1917 October Revolution — 11 years later
- 1917–1922 Russian Civil War — 11 years later
- 1929–1933 Collectivization in the Soviet Union — 23 years later
Middle East
- 1905–1911 Persian Constitutional Revolution — 1 year earlier
- 1908 Oil struck at Masjed Soleyman — 2 years later
- 1908 Young Turk Revolution — 2 years later
- 1915 Armenian genocide — 9 years later
- 1916 Sykes–Picot Agreement — 10 years later
Africa
- 1885 The Mahdists take Khartoum — 21 years earlier
- 1886 The Witwatersrand Gold Rush — 20 years earlier
- 1897 The British sack Benin City — 9 years earlier
- 1904–1908 The Herero and Nama genocide — 2 years earlier
- 1922 Discovery of Tutankhamun's tomb — 16 years later
Asia
- 1883 Eruption of Krakatoa — 23 years earlier
- 1885 Founding of the Indian National Congress — 21 years earlier
- 1894–1895 First Sino-Japanese War — 12 years earlier
- 1896–1898 Philippine Revolution — 10 years earlier
- 1911–1912 Xinhai Revolution — 5 years later
Oceania
- 1893 New Zealand women win the vote — 13 years earlier
- 1893 Overthrow of the Hawaiian Kingdom — 13 years earlier
- 1911 Amundsen reaches the South Pole — 5 years later
- 1912 The death of Scott's polar party — 6 years later
Alive at the time
- Leo Tolstoy (aged 78)
- Dmitri Mendeleev (aged 72)
- Thomas Edison (aged 59)
- Nikola Tesla (aged 50)
- Marie Curie (aged 39)
- Mahatma Gandhi (aged 37)
- Vladimir Lenin (aged 36)
- Ernest Rutherford (aged 35)
- Winston Churchill (aged 32)
- Joseph Stalin (aged 28)