Answer:
![\large \boxed{\mathrm{4, 1, 3, 2}}](https://img.qammunity.org/2021/formulas/history/middle-school/phh8jge8vvnjrr77zmyujzms3i000obzmo.png)
Step-by-step explanation:
4. Terrorist hijacked four passenger planes to attack New York City and Washington D.C. (2001)
1. More than 3,000 people died. (2001)
3. President Bush ordered an attack on Afghanistan. (2001-2002)
2. President Bush ordered an invasion of Iraq. (2003)