answers: the United Kingdom
context: these arrangements, the Union Jack was subordinate to the National Flag. As the two flags had to be the same size, it meant that the Union Jack was made in the ratio 2:3 rather than the usual 1:2. The flying of the Union Jack alongside the National Flag ended on 6 April 1957. The predecessor of the Union Jack, the flag of Great Britain, came into use in what is now Canada at the time of the Scottish settlement of Nova Scotia in 1621. The Union Flag was also the official flag of the Dominion of Newfoundland and continued in </s> (Royal Navy), the Red ensign (Merchant and private boats) or the Blue ensign (government departments and public corporations). Similar ensigns are used by other countries (such as New Zealand and Australia) with the Union Flag in the canton. Other Commonwealth countries (such as India and Jamaica) may follow similar ensign etiquette as the UK, replacing the Union Flag with their own national flag. The flag in a white border occasionally seen on merchant ships was sometimes referred to as the Pilot Jack. It can be traced back to 1823 when it was created as a signal flag, never intended as </s> Flag of the United Kingdom The national flag of the United Kingdom is the Union Jack, also known as the Union Flag. The current design of the Union Jack dates from the union of Ireland and Great Britain in 1801. It consists of the red cross of Saint George (patron saint of England), edged in white, superimposed on the Cross of St Patrick (patron saint of Ireland), which are superimposed on the Saltire of Saint Andrew (patron saint of Scotland). Wales is not represented in the Union Flag by Wales's patron saint, Saint David, as at the time the flag
question: which country 's flag is known as the union jack