It's A and B i know this probably does not help you now but that the answer for the future people that need it <span />
Allocating governmental authority among three separate branches also prevented the formation of too strong a national government capable of overpowering the individual state governments. In order to modify the separation of powers, the framers created a best-known system—checks and balances.
Explanation: im a time lord from the planet gallifrey
Answer:
people can preserve culture by documenting it and passing traditions on to younger generations.