King Kalākaua of the Kingdom of Hawaii landed in California, the first head of state to set foot in the United States while still reigning. His visit aimed to negotiate a reciprocity treaty granting Hawaiian sugar duty-free access to American markets, a diplomatic gambit that deepened economic ties between the islands and the mainland and set in motion forces that would eventually lead to Hawaii's annexation.
Albert Einstein entered the world in the German city of Ulm to a middle-class Jewish family running an electrical equipment business. Nothing in his early childhood, marked by a slow start in speaking, foreshadowed the revolution in physics he would later unleash with relativity and the photoelectric effect, work that reshaped humanity's understanding of space, time, and light.
Karl Marx died in his armchair at his home in London, largely stateless and in relative obscurity, attended by his housekeeper and family friend Friedrich Engels. Only a handful of mourners attended his burial at Highgate Cemetery, yet within decades his theories of class struggle and historical materialism would inspire revolutions across the globe and define the ideological battle lines of the twentieth century.
Under intense pressure from Adolf Hitler, Slovak leaders declared the independence of the Slovak Republic, severing it from a disintegrating Czechoslovakia. The new state, led by Catholic priest and politician Jozef Tiso, became a compliant satellite of Nazi Germany, clearing the way for the German occupation of the remaining Czech lands the following day.
Delegations from France and the Provisional Government of the Algerian Republic worked through the final details of the Évian Accords in the French spa town of Évian-les-Bains, hammering out terms to end the Algerian War, which had killed hundreds of thousands and destabilized the French Fourth and Fifth Republics alike. The accords, signed days later on March 18, would lead to a ceasefire and, eventually, full Algerian independence that July.
On March 15, 1985, Symbolics Inc., a Massachusetts computer manufacturer, registered symbolics.com, the first .com domain in history—though some records place related early domain activity around mid-March, underscoring how casually the infrastructure of the future internet was first assembled. The moment passed almost unnoticed at the time, decades before dot-com domains became the backbone of global commerce.
The Congress of People's Deputies voted to create the office of President of the USSR and elected Mikhail Gorbachev to fill it, formalizing an executive role meant to strengthen his hand as the Soviet Union splintered under nationalist pressure and economic collapse. The presidency proved a fragile perch; within twenty months the union he presided over would dissolve entirely.
Valeri Polyakov landed safely after 437 days and 18 hours in orbit aboard the Mir space station, a record for continuous time in space that has never been surpassed. His mission provided crucial medical data on the effects of extreme long-duration spaceflight, informing later plans for missions to Mars and extended stays on the International Space Station.