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Getting married in Lagos or EU makes no difference, if going to get married is the only reason why you are going to Lagos, does the expense worth it?

Canada is the only non EU country on your preferred destination country, and you will need to meet certain criteria before you get your Permanent residence which in most case will take year(s) depending on the route you take and you need to be qualify for it as well.

It would be easier fro you in the EU if you chose to

If your are looking for a high standard of living, all the country has it, but you should come down and choose one to settle with.

The salary in Norway and Denmark are pretty high, but Living expenses is high as well. Healthcare and Education is free with a very high human right protection laws.

maybe you should elaborate specifically your inquiries, it would be easier to help

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