The Spanish Armada was a large fleet sent by Spain in 1588 to invade England. It consisted of about 130 ships and aimed to overthrow Queen Elizabeth I and restore Catholic rule. The fleet was part of a larger conflict between Protestant England and Catholic Spain. The Armada faced several challenges, including poor weather and strong resistance from the English navy, led by commanders like Sir Francis Drake. After a series of battles, the Spanish fleet was ultimately defeated, marking a significant turning point in European history and establishing England as a major naval power.