I thought this survey from the Pew Research Center was interesting. It was done between June 16th and July 4th of a random national sample of 2,025 adults, and has a margin of error of 2.3 points. Respondents were asked to name the 10 most significant historic events in the lifetime. The chart above shows the results for the population in general -- and the charts below show the results according to generation, race/ethnicity, political preference, gender, region, education, and income level.
