The island is located quite far from civilized society, and it is not included in the territory of any country. When King first arrived on the island to establish his own lair, there were already indigenous people living here.
The indigenous people here also have yellow skin, but it's unclear which country they're from. Regardless, they have their own little world, and eventually, under King's leadership, they established a civilization. The development here has been quite impressive.
One aspect to note is that the interactions between King and the indigenous people were limited to trade exchanges.
Jazmine believes that since Giancarlo's body hasn't been found, he must be alright. She hopes to search the entire island to find his whereabouts.