Tunga..Tonga comes from Tonga.
Let me tell you about Tonga..
The Kingdom of Tonga is in the south Pacific.
It is an archipeligo consisting of 169 islands, 36 of which are inhabited.
Interestingly enough, Tonga is the only sovereign monarchy among the island nations of the Pacific Ocean, and has never been colonized.
Tonga is also known as the Friendly Islands.
In many Polynesian languages the word "Tonga" means "South".