Which constitutional principle describes the division of powers between the federal and state governments?

The answer is  Federalism.

Explanation:

Federalism is the sharing of power between the different layers of institutions or organizations. It means that both have exclusive power and are in a negotiable relationship. In federalism, there are both national and state-level elections and power is divided between them based on functions of national concern and state-controlled program.

500 books can be produced by one man and a printing press within 5 months, while a copyist can only produce one in the same amount of time

i really really really really really really dont know