Fire ants could rule the world if they wanted to.
I was doing property surveys in Harris County which means exposing all the deeply buried property rods sometimes buried for many long decades, which could get very messy at times with machetes and shovels and metal detectors, I ran into fire ants many, many times and they raise puss filled welts, they will also come after you, unlike other ants, if you get close to them they attack.