The principle is called "Checks and Balances".
The power to create laws, that is legislate is the sole power of Congress as enumerated by the United States Constitution. Congress has further enumerated powers to check and balance the executive and judicial branches of government.
Ruby Bridges was the first black child to have integrated William Frantz Elementary on November 14, 1960. Information about the principal for the school at that time is unknown.
tobacco
Principal features: As for FTA .Common external tariff on goods imported from outside.
James H. Lane was a a principal leader of the anti-slavery forces.
Laws are made by the Legislative Branch.
The separation of powers.
constitutional amendment
john marshall
Veto
The executive and legislature
Yes, indeed. He was one of the principal participants.
limited government
the Department of State
The king cannot go against the government
Popular sovereignty
Does the Constitution provide for the Cabinet? Not directly. Constitutional authority for the Cabinet comes from Article 2, Section 2, which says that the president "... may require the opinion, in writing, of the principal officer in each of the executive departments, upon any subject relating to the duties of their respective offices." Similarly, the Constitution does not specify which or how many executive departments should be created.