Then , during the Hundred Years ' War , it was regained by the Plantagenets .
Nearly one hundred years later , in 1204 , King Philip II Augustus of France conquered the region , apart from the Channel Islands .
During the Hundred Years ' War , it was regained by the Plantagenets .
Nearly one hundred years later , in 1204 , King Philip II Augustus of France conquered the region , apart from the Channel Islands .