Dashed left edge = started before April 1920 ·
Dashed right edge = ongoing beyond April 1920
Events in April 1920 9
1887 – 1920Srinivasa Ramanujan (1887-1920)Died 26 April 1920, aged 32Self-taught Indian mathematician who made extraordinary contributions to number theory, infinite series, and continued fractions despite having almost no formal training. His collaboration with G. H. Hardy at Cambridge produced results still studied today. He died of illness shortly after returning to India.
1918 – 1920The influenza pandemicWorldwideFirst recorded at a Kansas army camp and spread by troop movements, the pandemic killed somewhere between 25 and 50 million people — more than the war itself. Wartime censorship meant only neutral Spain reported it freely, which is how it got its name.
1920Easter Crisis 1920Constitutional CrisisA standoff between King Christian X and the government over the border with Germany; it solidified the parliaments power.
1920Nabi Musa RiotsViolence erupts in Jerusalem during religious festivalArab-Jewish violence broke out in Jerusalem during the annual Nabi Musa festival, leaving several people dead and many wounded on both sides. The unrest prompted British authorities to tighten control over the city. The riots are often cited as an early episode of the Arab-Israeli conflict.
1920 – 2012Ravi Shankar (1920-2012)Died 11 December 2012, aged 92Indian musician and composer credited with popularizing the sitar and Indian classical music in the West. He mentored George Harrison of the Beatles and performed at Woodstock and the Concert for Bangladesh.
1920Ravi Shankar born in BenaresVaranasiBorn in the holy city of Benares.
1920San Remo ConferenceAllied powers allocate League of Nations mandates in the Middle EastAllied leaders meeting in San Remo, Italy, decided the allocation of mandates over former Ottoman territories, assigning Palestine and Iraq to Britain and Syria and Lebanon to France. The conference incorporated the Balfour Declaration's support for a Jewish national home in Palestine into the mandate terms. The decisions shaped the political map of the modern Middle East.
19201920 Summer OlympicsVII Olympiad - AntwerpFirst time the Olympic flag was flown. Winner: USA.
1920Sovietization of AzerbaijanRed Army invasion ends Azerbaijani independenceThe Soviet 11th Army invaded the Azerbaijan Democratic Republic and installed a Bolshevik government in Baku, ending the country's brief period of independence. Azerbaijan became a Soviet republic and was later incorporated into the Transcaucasian SFSR. It did not regain independence until 1991.