Justice John Harlan’s dissent to the court’s decision in Plessy v. Ferguson was based on the premise that the Constitution was "color blind", and that separate but equal facilities were never truly "equal".
Answer: the executive branch
Explanation: The Constitution gives the Senate the power to approve, by a two-thirds vote, treaties negotiated by the executive branch. The Senate does not ratify treaties.
It was "B. Philippe de Vitry" who was a Medieval composer and was also a politician and author famous for his writings on music theory, since at the time not many people knew the fundamentals of such theory.