What do you think ended the major theme of each decade?

I been thinking about this for awhile

60s-MLKs death, The Vietnam War

70s-The War Nicaragua & The election of Ronald Raegan

80s-The Start of Grunge Rock & Gangsta Rap

90s-The Dot com bubble, The start of Y2K bands, The death of Grunge & Gangsta rap Artist (Tupac Kurt Cobain Ect……)

2000s-The Creation of the IPhone The Start of the Autotune, The Rise of YouTube , The Recession

2010s or 2020s-The Coronavirus, TikTok, Lofi becoming a mainstream music

What do you think ended the major theme of each decade?
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