The answer is B Conquest and disease brought by europeans changed the native american way of life forever.
Roosevelt: used military force to build the Panama Canal. The canal was a benefit for all countries that traded; Taft: Dollar Diplomacy increased American business; Wilson: Moral Diplomacy helped more stable leaders control Mexico.
Answer:
It illustrates INSTRUMENTATION as a threat to the internal validity of the experiment.
They were afraid that the government would gain to much power.
