In the late 19th century, classical liberalism developed into neo-classical liberalism, which argued for government to be as small as possible to allow the exercise of individual freedom. In its most extreme form, neo-classical liberalism advocated social Darwinism.
Generally we speak of " dark ages " . However, Historians prefer the terms "late antiquity " or "high middle ages" ( it cover the periode from 476 A.D to circa 1000 AD