Final answer:
Henry VII took immediate steps to secure his throne by establishing a royal council, using diplomacy to handle disputes, and employing the Star Chamber to deal with rebellious nobles, thus reducing the influence of the English aristocracy and strengthening the monarchy's power.
Step-by-step explanation:
To secure his throne, Henry VII took several immediate steps. Upon defeating his rival and ending the War of the Roses in 1485, he established the Tudor dynasty as the main political force in England.
Henry VII preferred working with a royal council composed predominantly of middle-class men rather than Parliament, enabling him to govern without having to secure funds for his ventures and reducing the influence of the English aristocracy. He employed diplomacy over warfare to handle international disputes, which also lessened the need to summon Parliament.
Furthermore, Henry VII's governing council made use of the Star Chamber to deal with intractable nobles, bypassing the traditions of English common law. This assertive approach helped in undermining aristocratic power and establishing a more centralized authority under the monarchy.