DC Comics released Flash Comics Issue 1, featuring Flash Gordon.
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Roman soldier Diocletian was appointed the new Roman Emperor after Roman Emperor Carus's death.
French inventor Pierre Lallement was awarded his patent for a pedal bicycle.
Zumbi, the last of the Quilombo dos Palmares kings, was killed.
Zarya, the first International Space Station module, was launched from the Baikonur Cosmodrome.
Oxford Dictionaries declared 'climate emergency' as the word of the year for 2019.
