Battle of Zwartewaal
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The Battle of Zwartewaal was a decisive naval battle during the Hook and Cod wars.
Naval war in the 14th century
Reconstruction of the 1300 situation, Meuse on top
Margaret II of Avesnes was Countess of Hainaut and Countess of Holland from 1345 to 1356. She was Holy Roman Empress and Queen of Germany by marriage to Holy Roman Emperor Louis IV the Bavarian.
Seal of Empress Margaret
15th century depiction of Margaret as countess