Which principle in the constitution divides authority between three branches of government?

separation of powers

The United States Constitution divides government into three separate and distinct branches: the Executive, Legislative and Judicial branches. The concept of separate branches with distinct powers is known as "separation of powers."

it's called a epic poem i believe, hope this ☺

alliteration is the repetition of the same or similar consonants. having that in mind, i would say that the correct answer is: so shows a snowy dove trooping with crows.