Much has been written about the decline of the United Kingdom. The Two Unions looks instead at the lengthy survival of the Union examining the institutions structures & individuals that have contributed to its longevity. In order to understand its survival the author one of the foremost historians of modern Ireland & of the British-Irish relationship sustains a comparison between the Irish & Scots Unions their respective origins & subsequent development. He provides a detailed examination of the two interlinked Unionist movements in Scotland & Irel&. Alvin Jackson illuminates not only the history & varied health of the United Kingdom over the past 300 years but also its present condition & prospects.