How Did England Prepare for the Spanish Invasion?

Elizabeth's privateers were hitting philip in his pocket. Walsingham spies had informed him of the naval preparation. He even had a spy in the household of the first commander santa cruz. And he also tried other methods, economic warfare, to try and slow up the despatch of the spanish armada. We've got a question here from zoe moreen on instagram. How did england prepare for the invasion, or how much were the general populace aware that this was happening?