It effects how close the part of earth is close to the sun and also effect the horizon causeing days/nighs to be longer
A functional region is a region is a central place and the surrounding area linked to it.
Language seems the obvious answer
You would definitely not expect political stability in a state that is being annexed or which does not have a territory - rather the opposite would be true.
Both multinational and souvereign states can have a high lever of political security. However, in a multinational state one can also expect some conflicts between the different ethnic groups - therefore the best answer is "a sovereign state"
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B. Indicate the map’s purpose