Separation of powers. The idea was that government cannot be completely trusted, so each branch of the government was given the authority and the responsibility to act as a check against the other two.
Chat with our AI personalities
i think separation of powers
This prevents one branch of government from becoming too powerful.
Charles-Louis de Montesquieu.
Federal system
If the reference is to political power, it is shared between the President and Congress. Of the three branches of government (Executive, Legislative, and Judicial) the executive and legislative make and approve laws, and the judicial is there to make sure that they are lawful.