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Esraa Gibreen
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Sputnik 1 was the first manmade satellite launched into Earth’s orbit, fired into space by the Soviet Union on 4 October 1957.
Jul 26, 2024 10:20PM
30-Second Twentieth Century: The 50 most significant ideas and events, each explained in half a minute

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Esraa Gibreen
Esraa Gibreen is 71% done
Though it was named Spanish Flu, this catastrophic influenza epidemic’s exact origin has never been determined.
Aug 05, 2024 01:32PM
30-Second Twentieth Century: The 50 most significant ideas and events, each explained in half a minute


Esraa Gibreen
Esraa Gibreen is 33% done
Bushnell’s Law states that an enjoyable video game should be ‘easy to learn and difficult to master’.
Jul 25, 2024 08:28PM
30-Second Twentieth Century: The 50 most significant ideas and events, each explained in half a minute


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Jul 24, 2024 02:30AM
30-Second Twentieth Century: The 50 most significant ideas and events, each explained in half a minute


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