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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The answer would be the 4th option. (Rainwater soaking into the ground). Soil erosion is commonly caused by rainwater soaking into the ground.
A since they must have evolved for a common ancestor or they would have different bone structure
