Why in 1337 did the British support Edward III, who started the war with France, although in 1205 they did not support

Why in 1337 did the British support Edward III, who started the war with France, although in 1205 they did not support John Lackland in the defense of Normandy?

The Hundred Years War began not “for the honor of the king,” but for the duty-free trade of the English port cities with Guienne and Flanders, vassals of France. This is similar to the situation in France in 1302.

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