Constitution of the United Kingdom from the state, which was confirmed by the Church of Scotland Act 1921. England and Wales share the same legal system, while Scotland and Northern Ireland each have their own distinct systems. These distinctions arose prior to and were retained after the unions according to the terms of the 1706 Treaty of Union, ratified by the 1707 Acts of Union, and the Acts of Union 1800. Reforms since 1997 have decentralised the UK by setting up a devolved Scottish Parliament and assemblies in Wales and Northern Ireland. The UK was formed as a unitary state, though Scotland and England retained
Acts of Union 1707 not mean James abandoned the idea; 17th-century religion and politics were closely linked and he viewed a unified Church of Scotland and England as the first step towards a centralised, Unionist state. The problem was that the two churches were very different in both structure and doctrine; Scottish bishops presided over Presbyterian structures but were doctrinal Calvinists who viewed many Church of England practices as little better than Catholicism. The religious policies followed by James and his son Charles I were intended as precursors to political union; resistance to this concept led to the 1638 National Covenant in Scotland and