B. It was believed that Afghanistan was harboring key members responsible for the September 11th terrorist attacks.
The correct answer is option A. separation of powers.
Separation of powers is a doctrine of constitutional law under which the three branches of government (executive, legislative, and judicial) are kept separate. This is also known as the system of checks and balances because each branch is given certain powers to check and balance the other branches.
In a direct democracy, the people decide on policies without any intermediary or representative, whereas in a representative democracy people vote for representatives who then enact policy initiatives.
Learn more about the separation of powers here: brainly.com/question/17526232
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b. to protest U.S. support for Israel.
c. to protest Western influence on their countries.
d. to weaken the U.S. economy.
B. Greek
C. Roman
D. German