👑 1399 – King Richard II was deposed in London, marking the first formal dethronement of an English monarch, as Henry Bolingbroke became Henry IV. ⚔️👑

🕵️ 1888 – The infamous "Dear Boss" letter, allegedly from Jack the Ripper, was received in London, taunting the police and cementing the killer's dark legacy. 🖋️🔪

💊 1928 – Alexander Fleming announced the discovery of penicillin, revolutionizing medicine and saving countless lives from bacterial infections. 🧫💡

💥 1929 – The British stock market crashed, signaling economic troubles that foreshadowed the global Great Depression. 📉💸

⚖️ 1946 – The Nuremberg Trials concluded with the sentencing of Nazi war criminals, establishing a new precedent for international justice. 🏛️⚖️

🌊 1954 – The USS Nautilus, the world's first atomic-powered submarine, was commissioned, transforming naval warfare with nuclear propulsion. 🚢🔋

🚗 1955 – Actor James Dean tragically died in a car crash, becoming an enduring icon of youthful rebellion and Hollywood legend. 🎬💔

🏆 1972 – Canada defeated the Soviet Union in the Summit Series, with Paul Henderson scoring the winning goal in a Cold War sporting showdown. 🏒🇨🇦

🌊 1994 – The MS Estonia tragically sank in the Baltic Sea, claiming 852 lives in one of the deadliest maritime disasters of the century. 🚢😢

🧠 2020 – Google achieved "quantum supremacy" with its Sycamore processor, completing a task far beyond the capabilities of classical computers. 💻🔬