Maybe not working out well? Or becoming weak?
The answer is: b. States have intangible boundaries.
A state boundaries is considered to be 'intangible' if they do not possess a physical form that clearly separate one area with the other. Currently, the most states in united states have a physical structure or natural objects (such as forests or mountain) that they use as a sign that separate their territories.
The answer is Lord of Eagles or the Lord of the Eagles. This is an example of a deus ex machina. This is of help if the writer usually gets into trouble having a problem the deus ex machina then saves the day. Hope this is the answer and this will be of help.