Which of the following facts is an example of the constitutional principle of separation of powers?
a. each branch of the federal government has different responsibilities.
b. the constitution provides for a strong central government and for state governments.
c. amendments to the constitution provide for term limits on the presidency.
d. the bill of rights protects the individual rights of individuals.

i believe it would influence their own way of understanding things. it shall be a foundation where they can draw or start an argument.   historians are also  scientists that  have their tools of analysis and expertise to unlock a variety of difficulties such as relationships of man, origin, politics, economy, and culture. based on facts and understanding on these areas, they may shade light to extract ideas and develop options to validate a hypothesis or debunk it.