How did Henry IV expand French territory through the Treaty of Lyons?

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Henry IV Henry IV, undated copperplate engraving.

Through the Treaty of Lyons (1601), Henry IV successfully expanded French territory by forcing the House of Savoy to cede several regions along France's eastern border. Specifically, this agreement resulted in the acquisition of Bresse, Bugey, and other surrounding territories. This expansion was part of Henry IV's broader foreign policy, which aimed to diminish Spanish influence in Europe while strengthening the French state.12