A quarter of France on paperSourced
A 1358 peace deal offered England
roughly a quarter of France.
During the Hundred Years' War, the First Treaty of London provided for about a quarter of French territory to pass to England, alongside a ransom for the French king. France could not raise the first ransom payment, and the treaty lapsed. The proposed transfer never took effect.
The border-changing plan
stayed on paper.
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First Treaty of London · Wikimedia contributors
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Reviewed: 2026-10-01