I assumed the comment I was replying to was in reference to our constellation of military bases and the economic machinations post ww2.

If it was referencing history prior to that then I would reply with the as you mentioned guano mines, fruit production, and keeping European powers out of our regional backyard after several scuffles with Spain and Britain at minimum.

I’d also mention the boat touching still.

The Marine’s Hymn doesn’t mention the Halls of Montezuma and the Shores of Tripoli for no reason.