sentences:  Berwick was not fully annexed into England until 1746, by the Wales and Berwick Act 1746.For centuries until the Union of the Crowns the region on either side of the boundary was a lawless territory suffering from the repeated raids in each direction of the Border Reivers.Following the Treaty of Union 1706, ratified by the Acts of Union 1707, which united Scotland with England and Wales to form the Kingdom of Great Britain, the Border forms the boundary of the two legal systems as the treaty between Scotland and England guaranteed the continued separation of English law and Scots law.