Naturalization is the legal act or process by which a non-citizen of a country may acquire citizenship or nationality of that country. It may be done automatically by a statute, i.e., without any effort on the part of the individual, or it may involve an application or a motion and approval by legal authorities.
not sure exactly what you're asking but basically it's the right to remain silent because anything that is said can be used against you and you have the right to have an attorney