When people say they are Irish, they are referring to the Republic of Ireland, which is a separate country from the United Kingdom.

紫色的区域就是英国，让人疑惑的可能是，英国并不是一个单一的国家，而是联合王国。 它包含了四个地位平等的主权国家。

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Earlier on Friday, campaigners and politicians from Northern Ireland and the Irish Republic gathered at Stormont to oppose any change to abortion laws on the island of Ireland.

BBC: David Ford

The British flag has long been a flashpoint between British loyalists and Irish nationalists, who want Northern Ireland to join the Irish republic.

CNN: Police deploy water cannon at Northern Ireland riot

Ulster Bank has 1.9m customers in Northern Ireland, the Irish Republic and other parts of the United Kingdom.

BBC: Ulster Bank sign