Answer:
There are two basic types of sleep: rapid eye movement (REM) sleep and non-REM sleep
Explanation:
The liberal arts (Latin: artes liberales) are those subjects or skills that in classical antiquity were considered essential for a free person (Latin: liberalis, "worthy of a free person")[1] to know in order to take an active part in civic life, something that (for Ancient Greece) included participating in public debate, defending oneself in court, serving on juries, and most importantly, military service. Grammar, logic, and rhetoric were the core liberal arts, while arithmetic, geometry, the theory of music, and astronomy also played a (somewhat lesser) part in education.[2]
Liberal arts education can refer to academic subjects such as literature, philosophy, mathematics, and social and physical sciences,[3] or it can also refer to overall studies in a liberal arts degree program. For example, Harvard University offers a Bachelor of Arts degree, which covers the social and natural sciences as well as the humanities. For both interpretations, the term generally refers to matters not relating to the professional, vocational, or technical curriculum.
Slavery is what separated the north and the south. Its what caused the civil war. the north wanted to abolish slavery but the south needed it.
both were presidents for the US and both got murdered
