As an anecdote, up in Canada most people my age (born in the 90s) would likely still consider 9/11 to be the most impactful individual event of our lifetimes. Time will tell if COVID-19 ends up overtaking it in retrospect, I feel like it likely will.

Of course, it’s not lost on me that we’re probably the country most culturally similar to the US, so I suppose this is unsurprising.