Increased employment opportunities.
Typically the reason people move isn't because they have access to more job positions.
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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Deep water currents are made of 90% of the ocean.
surface waves are made up of 10% of the ocean water
and primary forces start the water moving
