The embargo on English wool sparked a crisis in the Netherlands.

Evidence

In 1336 Edward was moved to retaliate in a decisive manner. He decreed an embargo on all exports of English wool, thus producing a furious crisis in the Netherlands. — Winston Churchill, A History of the English-Speaking…, 529

Categorization

• corroborated: 2 independent passages support this claim — Winston Churchill, A History of the English-Speaking…, 529