This statement is true. Providing background information will always help readers follow and understand your essay even if they do not know much about the topic you are writing about.
They divided the powers into three branches, legislative, executive, and judicial. So that in case one branch has too much power, they have the other branches to check them. All three branches has the same amount of powers but different kind of branch.
The literary device used in these lines is Personification.
The personification is a figure of speech in which a thing is given human attributes. The non-human objects are portrayed in such a way that we feel they have the capacity to act like human beings. This device makes the piece more interesting to read and makes it more sensitive to the reader.