Thomas Edison demonstrated his phonograph to the editors of “Scientific American.”
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A 6.9 earthquake in Spitak, Armenia, killed 25,000-50,000 people and left up to 500,000 homeless.
The Royal Opera House opened at Covent Garden, London, England.
Justin II of Byzantine adopted Tiberius, his general, and proclaimed him Caesar.
One of America's oldest documented highways was completed on this day in Connecticut, USA.
Delaware became the first state to ratify the US constitution.
