Quoth the Wiki, "A protectorate, in international law, is an autonomous territory that is protected diplomatically or militarily against third parties by a stronger state or entity. In exchange for this, the protectorate usually accepts specified obligations, which may vary greatly, depending on the real nature of their relationship. However, it retains sufficient measure of sovereignty and remains a state under international law." And American ones are the Marshall Islands, Micronesia, and Palau, who currently have a similar status (associated state) after their independence.

Does this call for a Hetalia/Merlin crossover? Or what about a fusion of sorts, where Narnia is a person who tries to woo all the Pevensies.