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Americans Name the 10 Most Significant Historic Events of Their Lifetimes | Pew Research Center
History: The world's most important event every year since 1920
Top 10 Important Events That Changed History in American's Lifetimes
The 100 Most Important Events in Human History | Make Lists, Not War
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Top 10 Important Events That Changed History in American's Lifetimes
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The World's Most Important Event Every Year Since 1920 – 24/7 Wall St.
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