Answer:
The decline in the relationship between England and Spain caused by Elizabeth I.
Explanation:
England considered Spain as its enemy because of its religion differences. England maintains hateful toward Catholic since Henry VIII of England broke from Rome papacy and its Church by claiming himself as of the Church of England. The stress among England and Spain grew in 1585 when Elizabeth I restored protestant in the country. Philip II of Spain was not happy with Elizabeth I decision.
Both England and Spain were known for having a strong Navy. Their ships were active in trade and often in competition with one another. Elizabeth supported some of her men, including Drake for stealing supplies (piracy) from the Spanish ships.
English involvement in the Netherlands also brought a certain tension because the Netherlands was part of the Spanish Empire. The Treaty of Nonsuch signed by Queen who agreed to become engaged in the Netherlands. She assured protection by sending troops in the Netherlands that led to the war between England and Spain.