In what ways were the rights of african americans restricted

What is the area of the trapezoid shown ?

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.

Who was marshall mcluhan and what did he have to do with communication theory?