A 6.9 earthquake in Spitak, Armenia, killed 25,000-50,000 people and left up to 500,000 homeless.
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Delaware became the first state to ratify the US constitution.
Pearl Harbor was attacked.
Jack Fingleton, an Australian cricketer, became the first batsman to score 100 runs in four consecutive test matches.
Inventor Leo Baekeland patented the first thermosetting plastic, Bakelite, which sparked the birth of the plastics industry.
An assassination attempt was made on the First Lady of the Philippines.
