Why did the United States invade Afghanistan in 2001?

to respond to terrorist attacks on U.S. territory
to protect neighboring countries from a likely invasion
to prevent a communist government from taking over the country
to overthrow a government that was developing nuclear weapons

Question

Why did the United States invade Afghanistan in 2001? 
 	
	to respond to terrorist attacks on U.S. territory
	to protect neighboring countries from a likely invasion
	to prevent a communist government from taking over the country
	to overthrow a government that was developing nuclear weapons

anonymous · Answer

Your answer is, to respond to terrorist attacks on U.S. territory. Can you give me a metal? I am trying to collect more.

anonymous · Answer

@CMFink00