Which event in 2011 was cause for celebration in the united states?
the war in afghanistan ended with the election of a democratic government.
al-qaeda leader osama bin laden was killed after a 10-year pursuit.
iraqi leader saddam hussein was assassinated in a raid at his palace.
the taliban officially surrendered and agreed to stop its insurgency in afghanistan.

B. Al-Qaeda leader Osama Bin Laden was killed after a 10-year pursuit.

Explanation:

The event in 2011 that was the cause for celebration in the United States was Al-Qaeda leader Osama Bin Laden, was killed after a 10-year pursuit.

B. Al-Qaeda leader Osama Bin Laden was killed after a 10-year pursuit.

a

explanation:

the policy of appeasement influenced the beginning of ww2 because hitler gave the other countrys chocies but after they choose to try and appease hitler to not invade their country but he still invaded them.