Tonga lies in the central Pacific and is one of the more ancient populated archipelagos of Polynesia, even with its own megalithic-style historical monuments. It was formerly a British overseas territory. Today, the Kingdom of Tonga is by-and-large the only native monarchy left in the entirety of Oceania (at least as far as fully independant countries go).

None that we know of.

Tongan Timelines and Scenarios

Tongan Points of Divergence

Useful Resources about Tonga

Regions of the World