The Sack of Antwerp, often known as the Spanish Fury at Antwerp, was an episode of the Eighty Years' War.On 4 November 1576, mutinying Spanish tercios began the sack of Antwerp, leading to three days of horror among the population of the city, which was the cultural, economic and financial center of the Netherlands. The savagery of the sack led the provinces of the Low Countries to unite against the Spanish crown.