Philip II Augustus: The Affirmation of Capetian Power (1180–1223) · HIGH MIDDLE AGES
The Treaty of Boves (1185) marks a key step in reducing Flemish power and expanding Capetian authority northward. It is achieved without a decisive battle, through diplomatic pressure.
Boves divides the Vermandois between French and Flemish, while Amienois passes to the crown. This treaty prevents a northern coalition from forming against the king.