Answer:
A parliamentary system of government means that the executive branch of government has the direct or indirect support of the parliament. The head of government is the prime minister, who has the real power. The head of state may be an elected president or, in the case of a constitutional monarchy, hereditary.
The answer is: American troops could invade Iraq if necessary.
Both A and C
A. To memorize dates, people, and events
C. To recognize historical patterns
If you have to choose one, I would go with C.
