The Indus Valley.
Hope this helps! :)
They don’t have enough money to pay for medical supplies and such
The Plains Indians originated from the Great Plains and the Canadian Prairies. However, it is important to note that all of this prairie land stretches from Canada, to the United States and down to Mexico. It touches the following provinces of Canada: Alberta, Manitoba and Saskatchewan. The states it has land in are Colorado, Kansas, Montana, Nebraska, New Mexico, North Dakota, Oklahoma, South Dakota, Texas and Wyoming. In Mexico, it touches some territory in northern Mexico, but stops at the Rio Grande.
The school of thought that would most likely agree with uncle John is behaviorism.
Behaviorists believed that every type of action and behavior should be observed so as to be researched. If it cannot be directly observed, it doesn't require particular attention because it is not as relevant. Some famous behaviorists are Skinner, Watson, Pavlov, etc.