Tolkien also stated why we (and he) knew so little about the realms outside North-west M-e.
I think that Sharku already answered the question fully, except that in the South dwells Lord Imrahil at Dol Amroth at the Southern Border of M-E.
greetings,
lathspell
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'You?' cried Frodo.
'Yes, I, Gandalf the Grey,' said the wizard solemnly. 'There are many powers in the world, for good or for evil. Some are greater than I am. Against some I have not yet been measured. But my time is coming.'
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