What's the answer on this usa test prep quiz

Which is likely the most serious problem associated with an epidemic? 1. there are sometimes no cures to the diseases that spread. 2. people often die from the diseases that spread. 3. there are usually no ways to prevent people from getting ill. 4. people often don’t know they have a disease.

How did the incas unite the andes mountains?

Some people argue that television coverage of the vietnam war