President George W. Bush, Donald Rumsfeld and others look back on the attack on the Pentagon on September 11, 2001.

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Remembering 9/11: The Pentagon Attack

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<p>The 21st century saw the dawn of the war on terrorism, as the 9/11 attacks and the Boston Marathon bombing dramatically changed society. Economic issues moved to the forefront during the Great Recession. The COVID-19 pandemic upended lives and economies around the world. Awareness of social inequality grew as the killings of Black Americans, including Trayvon Martin and George Floyd, spurred widespread protests.</p>


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