Final answer:
Muscovy rose to power during Mongol rule through strategic political alliances, which allowed them to collect tribute and assimilate Mongol governmental practices to solidify control.
Step-by-step explanation:
The rise of Muscovy during Mongol rule is best described by Political alliances. The Muscovite princes increased their power and territory largely through a series of shrewd political maneuvers and alliances, particularly with their Mongol overlords, rather than by military conquest or economic dominance. These alliances enabled them to collect tribute from other Russian territories on behalf of the Mongols, which gradually augmented their own power and resources. Additionally, they assimilated some Mongol governmental practices, which further solidified their authority.