Answer:
American settlers were taught by Native americans how to trade and how to farm crops. American settlers later took the land away from Native Americans and out them on reservations
Based on the other answer, I'm guessing that it was A. Russians were likely to reject pure Marxism because Marx was a German. (I'll update it when I know for sure.)
The answer is C, they thought it granted too much power to the national government.
The best answer is C. physician's pledge to care for patients.
Hippocrates was a Greek practitioner of medicine, known by many today as the "Father of Modern Medicine" and established the Hippocratic oath which is still used today and required doctors to uphold ethics when caring for their patients. His philosophy of medicine, which includes the idea of doing no harm to a patient is a foundation for western medicine today.