Final answer:
The acquisition of land was indeed the pivotal driving force behind the formulation of early U.S. Indian policy, leading to significant displacement of Native American tribes.
Step-by-step explanation:
It is true that the acquisition of land was the most important motivating factor in the formulation of early U.S. Indian policy. This factor significantly influenced the actions and treaties of the United States government with Native American tribes. The desire for more land for settlement, agriculture, and later on, resource exploitation, played a central role in shaping the policies that led to displacement, resettlement, and sometimes forced removal of Native Americans from their ancestral lands.