Northern Ireland.
The Republic of Ireland. It has a border with Northern Ireland, which is part of the UK.
The Republic of Ireland.
The portion of the UK that is Northern Ireland shares a border with Ireland (Republic of Eire) The rest of the UK is an island, and does not border any country.
The Republic of Ireland shares a land border with Northern Ireland which is part of the United Kingdom.
Ireland
On the island of Ireland you will find the country officially known as Ireland or Éire, sometimes referred to as the Republic of Ireland or incorrectly referred to as Southern Ireland. You will also find Northern Ireland on the island of Ireland.
The Dominican Republic shares a border with Haiti on the island of Hispaniola.
Northern Ireland which is part of the UK
The Republic of Ireland (Éire) shares the island of Ireland with one of the regions (Northern Ireland) of the United Kingdom.
The Dominican Republic shares a border with Haiti on the eastern side of the island of Hispaniola.
The Republic of Ireland.
The Republic of Ireland