The series actually takes place in the late 1800's. The British colonized the island and expected all the natives to learn flawless English within one year. Mike arrives shortly after the mass execution of those who failed to meet the deadline.
Of course that aspect of the show was only seen in the show bible and a few interviews with ToonZone. They couldn't actually address the genocide aspect on the show itself. CN execs ruining our shit, as always.