The US began fighting in Afghanistan in 2001 to combat terrorist groups.
to support pro-democracy rebels.
to stop nuclear development.
to end border violence.

A. to combat terrorist groups.

Explanation:

I took the test.

the supreme court can hear any case it wishes as long as four justices agree to hear it.

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(b) britain had a much larger navy than the u.s.

(d) the u.s. had a small army compared to britain.