You need an international lawyer. There are many in NYC. It is going to be quite expensive, though.

You've done everything but the first thing you should have done: hire a Belize lawyer. Do it.

It will depend on Chilean law. Personal injury matters follow the jurisdiction of the site of the injury. Hire a Chilean lawyer

Did they say why? Hire a customs and trade lawyer.

It would depend on the law and medical association of each particular country. Contact them and find out. Since i assume you are fluent in Spanish...

This is a Canada law question. Hire a Canadian lawyer.

This is an immigration question. Pass to that area.

Germany does not extradite its citizens. If he moves back there, you would have to rely on such international treaties and conventions that would...

Land court where? In what jurisdiction?

Whose wanted list? It depends on who is looking for the person and where. I agree with my colleagues too.