Which country was invaded and its government fell 3 months after the 9-11 attack on America?

a. Iran

b. Iraq

c. Syria

d. Afghanistan

It was letter d. Afghanistan. The U. S. sent troops to invade Afghanistan in response to the attacks orchestrated by Al Qaeda led by Osama Bin Laden. They destroyed the World Trade Center and the parts of the Pentagon as two airliners were used to crash into those two landmarks where many people were killed and injured as a result.