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 30 representatives each from Scotland and Ireland added to the existing English members. While it established free trade within the Commonwealth, the economic benefits were diminished by the heavy taxation needed to fund the army. In Scotland, Union was associated with military occupation, in England with heavy taxes and had little popular support in either country. It was dissolved by the 1660 Restoration of Charles II despite a petition by Scottish members of the Commonwealth Parliament for its continuance. The Scottish economy was badly damaged by the English Navigation Acts of 1660 and 1663 and wars with the Dutch Republic,