Final answer:
The British side was outnumbered and relied on its native allies for assistance during the American Revolution, while very few Native Americans supported the American revolutionaries.
Step-by-step explanation:
The side that was outnumbered and had to rely on its native allies for assistance during the American Revolution was the British.
Many native groups, such as the Iroquois Confederacy and Ohio River Valley tribes, supported the British. In contrast, very few Native Americans sided with the American revolutionaries due to the perceived threat they posed.
This complex situation among native groups affected the alliances and strategies during the war.