I was under the impression that the Numenoreans were very much imperialists towards the end, as in they’d raid Middle Earth for all its riches and there was nothing they could do about it.

When Numenor sank beneath the waves and the Faithful came to Middle Earth, how did they reconcile with the existing inhabitants? “Oh yeah we’re Numenorean but we’re totally not like those bad ones. Btw we’re setting up a kingdom here and here and there’s nothing you can do about it”.

There couldn’t have been that many Faithful on those ships. How did they manage to acquire so much land with so little opposition?