Interested in Language
'united' is combined into a single entity, that is having been a number of separate entities once.
'whole' is complete, that is not divided but in a way still dividable.
'unity' is just the quality of being one with no connotations of having any parts.
Is there an adjective representing the same quality of just being one?
Not a teacher
together as one
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.