“Shared experiences define what it means to be an American. The Sept. 11, 2001, terrorist attacks were such a unifying event for modern Americans. Nothing else has come close to being as important or as memorable, according to a new survey conducted by Pew Research Center in association with A+E Networks’ HISTORY. Roughly three-quarters (76%) of the public include the Sept. 11 terror attacks as one of the 10 events during their lifetime with the greatest impact on the country, according to a national online survey of 2,025 adults conducted June 16-July 4, 2016. The perceived historic importance of the attacks on New York and the Pentagon, span virtually every traditional demographic divide. Majorities of men and women, Millennials and Baby Boomers, Americans with college degrees and those without a high school diploma rate 9/11 as one of the 10 most historically significant events to occur during their lifetime. And while they seem to agree on little else this election year, the survey finds that more than seven-in-ten Republicans and Democrats name the attacks as one of their top 10 historic events…The survey finds that Americans are primarily bound together by their generation and the major events that occurred during their formative years. For the oldest Americans, the Silent and Greatest generations, that unifying event is World War II. For Baby Boomers, the assassination of John F. Kennedy and the Vietnam War are defining moments. For Millennials and Gen Xers, the 9/11 terror attacks and the Obama election leads the list by a greater margin than for other generations. The top 10 list for these young Americans also varies from the rankings of other generations. For example, the Columbine school shooting makes the top 10 list of Millennials and Gen Xers but not Boomers or the Silent Generation. Millennials also are unique in that five of their top 10 events – the Sandy Hook and Orlando/Pulse nightclub shootings, the death of Osama bin Laden, the Boston Marathon bombing and the Great Recession – appear in no other generation’s top 10 list…”