Original: He did not claim the crown of West Francia when his brother died in 898 ; but recognizing the supremacy of the Carolingian king , Charles the Simple , he was confirmed in his offices and possessions , after which he continued to defend northern Francia from the attacks of the Norsemen .
Simplified: He did not call himself king of West Francia when his brother died in 898 . Instead he served the Carolingian king , Charles the Simple and defended northern Francia from the attacks of the Norsemen .