FTP, name this force weakened by Frobisher, Hawkins, and Drake and which failed in accomplishing Philip II's dream of a naval invasion of England.
It was weakened by surprise attacks at Cascaes and St. Vincent, which led to the destruction of many of its supplies.  Possibly its biggest loss was the Salvador, which led to the death of the paymaster and no more gold.  Dutch intervention prevented the duke of Parma from reinforcing it, and Medina-Sidonia was at the mercy of Lord Howard's superior tactical force.  FTP, name this force weakened by Frobisher, Hawkins, and Drake and which failed in accomplishing Philip II's dream of a naval invasion of England.
It was weakened by surprise attacks at Cascaes and St. Vincent, which led to the destruction of many of its supplies.  
Spanish Armada