What statements describe ways that Ivan III increased his power as state ruler of Russia?

Ivan III, also known as Ivan the Great, significantly increased his power by consolidating Russian territories and resisting Mongol rule, ultimately leading to the liberation of Russia from Mongol control. He established Moscow as the political and cultural center of Russia, promoting it as a successor to the Byzantine Empire. Additionally, Ivan III centralized the administration by reducing the power of the nobility and increasing the authority of the monarchy, which solidified his control over the region. His marriage to Sophia Palaiologina, a Byzantine princess, further enhanced his legitimacy and royal status.