"I wonder where the planters came from? I'm sure they would have benefited from an army coming in to protect them from the 'restless natives' huh?"
China?
"Who benefits from the US entering these areas? What does the US do with these islands it 'anexes'?"
Go back and read for comprehension.
"Put lots of big guns on them mostly. Why? To protect themselves from the 'yellow hoard'!"
The biggest gun in the world, mounted on Hawaii, would hit Hawaii.