Treaty of Union took effect on 1 May 1707. Queen Elizabeth I of England and Ireland, last monarch of the Tudor dynasty, died without issue on 24 March 1603, and the throne fell at once (and uncontroversially) to her first cousin twice removed, James VI of Scotland, a member of House of Stuart and the only son of Mary, Queen of Scots. By the Union of the Crowns in 1603 he assumed the throne of the Kingdom of England and the Kingdom of Ireland as King James I. This personal union lessened the constant English fears of Scottish cooperation with France in a
House of Tudor effective monarch. She took part in law, economics, politics and governmental issues both domestic and abroad. Realms that had once been strictly forbidden to the female gender had now been ruled by one. She pushed the barriers of tradition by never marrying nor giving into womanly duties. Elizabeth never named a successor. However, her chief minister Sir Robert Cecil had corresponded with the Protestant King James VI of Scotland, great-grandson of Margaret Tudor, and James's succession to the English throne was unopposed. There has been discussion over the selected heir. It has been argued that Elizabeth would have selected James