3. Why is it important to understand how 9/11 affected the u. s and much of the world?

Because we have to understand the perspectives of those who were affected my 9/11 while also honoring the victims of the event.

they killed other men

explanation:

herodotus taught this. herodotus was an ancient greek historian who was born in halicarnassus in the persian empire. he is known for having written the book the histories, a detailed record of his "inquiry" on the origins of the greco-persian wars.