zumed678 writes: "This module addresses the different types of federalism and explains why the United States is considered an example of cooperative federalism. It then moves on to a discussion of the sections of the Constitution that deal with the separation of state and national powers the (10th Amendment, the necessary and proper clause, the commerce clause, and the supremacy clause), and it explains the effect of each on the balance of power. The module offers several case studies (medical marijuana, same-sex marriage, abortion, gun control, and education) and explains why each issue is decided at the state or national level." Link to Original Source
Advertising is a valuable economic factor because it is the cheapest
way of selling goods, particularly if the goods are worthless.
-- Sinclair Lewis