Answer: B
Explanation:
Opportunity cost is a profit or benefit that must be given up on order to acquire something else. Every resource such as money, land, and time can be put to a different use, therefore every choice, action, or decision has an opportunity cost.
Opportunity cost is the value or worth of the next best thing that one gives give up whenever a decision is made. It is the loss of a potential gain from another alternatives when a different alternative is chosen.
When a city invests in repairing its road, the opportunity cost can be not able to afford a museum because the money that could have been used to build a museum has been used for the road.
Answer:
A
Explanation: If a land army was to ever invade them, they would need to rule the sea, the last time this happened was by Japan, but the battle of Coral sea and midway stopped them from making landings on Australia, so it prevented a large invasion of Australia, In addition, the closet country that could invade Australia is most likely China and there thousands of miles away so it prevents Australia from getting invaded.
The states did not act immediately.
States were also able to conduct their own foreign policies.
States also had their own money systems.
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