When Mary Tudor died, Elizabeth I came to the throne (1558). She re-established the Anglican Church but she adopted a policy of compromise and put the Anglican Church in the middle between the Reformed Churches and the Catholic one. A second Act of Supremacy restated the independence  of the Church of England and the Act of Uniformity made the use of the Book of Common Prayer compulsory. Thanks to this policy Elizabeth ensured England internal peace and increased wealth and commercial power. After the discovery of America, Elizabeth supported the new explorations thanks to the creation of a powerful fleet. Elizabeth had only one serious trade: her Catholic cousin Mary Stuart next in succession after her. Elizabeth kept her virtually prisoner for nineteen years and when the latest plot was discovered, Elizabeth consented to Mary’s execution. After that, things went worse between Spain and England. In 1588 the frictions brought to open war when Philip II of Spain tried to invade England. The Spanish “Invincible Armada” was defeated in the English Channel.