Twenty years, two towers, and two wars later, did 9/11 change anything?
Of course, it tragically cost the lives of nearly 3000 Americans, and trillions of dollars. It also resulted in a temporary change in government in Afghanistan, and a permanent one in Iraq. And airplane pilots now lock their cockpit doors. If only they had had the good sense to do so twenty years ago, 9/11 might never have happened.
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