Which national civil rights organization organized the legal work that led to brown v. The board of education?

How did francis bacon challenge the way of thinking about science

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.

Where did khomeini seize power in 1979?