Revenue stamps of Northern Ireland
Upon the partition of Ireland in 1921, separate revenue stamps began to be issued for both Northern Ireland and Southern Ireland. The latter were withdrawn soon afterwards upon the establishment of the Provisional Government, but the former continued to issue revenue stamps until the late 20th century. The need for separate issues for Northern Ireland came about since taxes raised there were meant to remain in the country. Most Northern Irish revenue stamps were British key types with appropriate inscriptions, but there were a number of different issues as well.
Partition of Ireland
In 1966 the Taoiseach Seán Lemass visited Northern Ireland in secrecy, leading to a return visit to Dublin by Terence O'Neill; it had taken four decades to achieve such a simple meeting. The impact was further reduced when both countries joined the European Economic Community in 1973. With the onset of The Troubles (1969–98) a 1973 referendum showed that a majority of the electorate in Northern Ireland did want to continue the link to Britain as expected, but the referendum was boycotted by Nationalist voters.