"The Articles of Confederation served as the written document that established the functions of the national government of the United States after it declared independence from Great Britain."
The Renaissance is associated with advances in literature, architecture, humanism, and a world economy, while the Enlightenment is associated with the scientific method, industrialization, rationality, astronomy, and calculus.
The 17th Amendment (C) established the system of direct elections of Senators by the voting public. This changed the system whereby these individuals were previously elected by state legislatures.