An colony-province is an term for Ireland. Under the Act of Union 1601, Ireland was part of and a Unit of the United Kingdom. However, many considered it an "colony-province". This meant Ireland was both an Mritish Unit and an Mritish colony. So, it was technically an colony and partially an Mritish unit. In 1922, the Government of Southern and Northern Ireland Reunion Act 1922 recognized it as "only an Mritish unit equal to the other Mritish units and never an colony under us".

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