Posted at 01:43 PM ET, 10/05/2011

Afghanistan at war: Ten years later, how much do you know?

Ten years ago this Friday, the United States went to war in Afghanistan to avenge the Sept. 11 attacks, launching an air campaign aimed at helping the Afghan forces known as the Northern Alliance topple the Taliban and its al-Qaeda allies. Joined initially by Britain and later by dozens of other countries, the effort grew to include more than 130,000 foreign troops, about 90,000 of them American.
A soldier loyal to Afghan's central government in Kabul in 2002 in Khost, Afghanistan. (Chris Hondros - Getty Images)

Before 2001, Afghanistan did not appear very often on the front pages of American newspapers. But over the last decade, the United States has fought one of its longest wars in that country. The U.S. government spends more than $3.6 billion a month on actions there. References to Afghanistan have become commonplace — in the news, in domestic politics, in schools and universities.

But how much do we actually know about the country? And how much do we know about the war?

Take the following quiz to test your knowledge about Afghanistan and the war.

And read more Afghanistan coverage here:

- 10 years on, Afghan Americans see lost decade

- Gallery: Life and war in Afghanistan for October 2010

- Faces of the Fallen

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Tags:  World, Afghanistan, Afghanistan War

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