All those aliens were fought and shooed away by the Malays.
Lots of lives and blood were shed in the process.
Thus why if any other races fancy wanting to claimed this country and have the intentions to rule -- it's a NO - NO.
We're not the American.
We don't play 'wayang kulit' and let some Black to take helm of the country and doing it just when they knew damn well that the economy will be plunging as deep as Dolly's cleavage.
So, lets just stay there.