Posting youtube links without explaining why anyone should watch them is not considered useful by most HN people. I looked at the start, and it didn't seem useful for the issue at hand, which (to me) is that the Republic of Ireland and the landmass named Ireland are two different things.

The Republic of Ireland doesn't include Northern Ireland, which is part of the United Kingdom.

The landmass named Ireland does.

I'm surprised to see that you are still missing that, but, ok, as an American maybe I'm not really understanding what's going on.