Name the country which adopted the Union jack as the semi-official status?
Flag of Great Britain The flag of Great Britain, commonly known as the Union Jack or Union Flag, is a maritime flag of Great Britain that was used from 1606 to 1801. The design was ordered by King James VI and I to be used on ships on the high seas, and it subsequently came into use as a national flag following the Treaty of Union and Acts of Union 1707, gaining the status of "the Ensign armorial of the Kingdom of Great Britain", the newly created state. It was later adopted by land forces, although the blue field used on land-based versions more closely resembled that of the blue of the flag of Scotland.
Flag of Northern Ireland The official flag of Northern Ireland is the Union Flag of the United Kingdom. From 1953 until 1973, the Ulster Banner (also known as the Ulster flag) was used by the Parliament of Northern Ireland; however, since its abolition use of the flag has been limited to representing Northern Ireland in certain sports, at the Commonwealth of Nations, at some local councils and at some other organisations and occasions. Despite this, the Ulster Banner is still commonly seen and referred to as the flag of Northern Ireland, especially by those from the unionist and loyalist communities.