How come in most school in the USA (at least mine) they teach Spain Spanish instead of Mexico Spanish? Would not Mexico Spanish be an obvious choice to teach?
There's uh, lots more than 2. It's similar to how there's English English and Nigerian English, just dialectical differences - some more major than others.
Toilet can mean the whole room if separate (i.e. no shower or bath) or just the appliance, depending on context. Can use loo to mean what Americans would refer to as 'bsthroom'/'restroom'.