Final answer:
True, the acquisition of land was a primary motivating factor in early U.S. Indian policy; false, Proprietors in proprietary colonies had responsibilities beyond just collecting profits; true, the Southeastern United States was an independent center for plant domestication; true, the Louisiana Purchase doubled the territory of the United States.
Step-by-step explanation:
The statement that acquisition of land was the most important motivating factor in the formulation of early U.S. Indian policy is True. This can be seen in various historical acts and treaties that were driven by the desire to expand territories and exploit resources. Historical records show that the United States government engaged in treaties and policies that would systematically move Native American tribes westward to gain control of their lands. For instance, the Indian Removal Act of 1830 facilitated the relocation of Native American tribes from their ancestral lands, leading to events such as the Trail of Tears.
Concerning the responsibilities of Proprietors in a proprietary colony, the statement that they have no responsibilities except to collect profits is False. Proprietors were responsible for the administration of the colony, maintaining order, and overseeing the development of the territory. They were effectively the governors of their lands and had to manage the colony's affairs, not merely collect profits.
Regarding the domestication of plants, it is True that the present-day Southeastern United States was one of the world's independent centers for plant domestication. This region saw the early cultivation of crops such as squash, sunflowers, and goosefoot, which were important to the agricultural practices of Native American societies before European contact.
The Louisiana Purchase significantly expanded the territory of the United States and is considered to have doubled the size of the nation. Therefore, stating that the Louisiana Purchase doubled the territory of the United States is True. The Louisiana Purchase took place in 1803 when the U.S. acquired approximately 827,000 square miles of land west of the Mississippi River from France.