Mary Stuart was Elizabeth’s great rival. She was a warm-blooded woman and had not the instinctive political skill. She was sent to France where she married the Dauphin of France, Francis II. He became the king of France but soon he died. Mary went back home but she found a protestant country. There were many struggles between Mary, the Scottish nobles and John Knox. Mary was supported by the catholic power of France and Spain, but when she married at first Lord Darnley and then a Scottish lord, who was suspected of the murder of Darnley, they all abandoned her. Now all the people was against her. Her cousin protected her for 19 years. But this caused many plots against Elizabeth, so she decided to kill her. This was one of the cause of the hostilities between England and Spain, which grown worse and worse. In 1588 Spain sent the Invincible Armada, but it was defeated by English ships.