Listerine advertised that its antiseptic mouthwash could "prevent and cure sore throats; rinsing with it is as effective as flossing in fighting tooth and gum decay." however, there were no clinical trials that supported such a claim. this was most likely an example of advertising.

> > objectives define federalism and explain why the framers adopted a federal system instead of a unitary system. categorize powers delegated to and denied to the national government, and powers reserved for and denied to the states, and the difference between exclusive and concurrent powers.