Unionism in England possession) and Scotland was created by the Acts of Union, passed in the parliaments of both kingdoms in 1707 and 1706 respectively, which united the governments of what had previously been independent states (though they had shared the same monarch in a personal union since 1603) under the Parliament of Great Britain. The Union was brought into existence under the Acts of Union on 1 May 1707. With the Act of Union 1800, the Kingdom of Ireland united with Great Britain into what then formed the United Kingdom of Great Britain and Ireland. The history of the Unions is reflected
Acts of Union 1800 Acts of Union 1800 The Acts of Union 1800 (sometimes erroneously referred to as a single Act of Union 1801) were parallel acts of the Parliament of Great Britain and the Parliament of Ireland which united the Kingdom of Great Britain and the Kingdom of Ireland (previously in personal union) to create the United Kingdom of Great Britain and Ireland. The acts came into force on 1 January 1801, and the merged Parliament of the United Kingdom had its first meeting on 22 January 1801. Both acts remain in force, with amendments, in the United Kingdom of Great Britain and