Answer:
no it's not necessary to make all the things public
Colonial rule rested upon violence and coercion in that many colonies were seized with military force; rebellions were regularly suppressed using violence; and forced labor was regularly extracted from the populations of colonies. However, the colonial system also relied on voluntary cooperation.
With the invention of the stethoscope, physicians were able to listen to the various sounds made by the heart and lungs. And began to be able to identify if patients had any diseases or ailments.
Answer:
what the person did involuntary, and voluntary
Explanation: