Answer :
Answer:
“Lessons Learned From Terrorist Attacks. ... And I hope that we can talk about those this afternoon. ... And Gilles Kepel, who is a professor at the Paris Institute of Political Studies, and the ... you know, for the 15 years that it lastedanation
Explnation:
Answer:
911
Explanation: 911 is something we all herd of or experienced it teaches us to always take precautions, it also teaches construction workers to make safer and more efficient ways to exit or escape a building. that is a long lasting lesson we will never forget