Final answer:
William, the Conqueror, was successful in unifying the land due to his attitude towards the peoples he conquered.
Step-by-step explanation:
William, the Conqueror, was more successful than previous kings in terms of unifying the land due to his attitude towards the peoples he conquered. He sought to win them over by establishing personal relationships with chiefs and granting tax remissions to the masses. In addition, he ensured control over the cities by arming Roman settlers and undertaking military preparations against his enemies. These strategies helped him gain popularity and maintain a strong hold over the land.