Obviously that is a massively controversial subject. The short answer is "Because the majority of people in the six counties known as Northern Ireland consider themselves as British"
It was Irish (mostly Ulster) Unionists in the late 1800's who with their allies in the British Conservative party who consistantly objected to the idea of Irish home rule, the idea of a separate homeland for the Protestant Ulstermen seemed like the only compromise, and it was the only thing that nobody wanted, not the British government, not Irish nationalists and not Ulster Loyalists.
The British Empire - yes
Irish navvies
Eire, or the The Republic of Ireland, had their independence from the British Empire ratified in January 1922 followed by Egypt in February 1922.
The British Commonwealth
This is because the majory of people living in it known as unionist want to remain part of the UK. At one stage the whole island of Ireland was part of the Great Britain because the king at the time took control. As time went by only the nothern end of this island wanted to remain part of Great Britain called Ulster.
there are lots and lots and lots of countries that belong to the British empire i cant explain all of them sorry/
England, Scotland, Whales and Northern Ireland
The British Empire.
the British Empire
Scotland, Ireland Wales.
Scotland, England,Wales and all of Ireland.
the colonial british blood empire